diff --git a/config/services.yml b/config/services.yml
index 6a940fda..70fb892d 100644
--- a/config/services.yml
+++ b/config/services.yml
@@ -21,6 +21,7 @@ services:
             - @path_helper
             - %core.root_path%
             - .%core.php_ext%
+            - @board3.module_collection
 
     board3.version.check:
         class: \board3\portal\includes\mod_version_check
@@ -31,3 +32,22 @@ services:
             - %core.php_ext%
             - @template
             - @user
+
+    board3.module_collection:
+        class: phpbb\di\service_collection
+        arguments:
+            - @service_container
+        tags:
+            - { name: service_collection, tag: board3.module }
+
+    board3.module.stylechanger:
+        class: \board3\portal\modules\stylechanger
+        arguments:
+            - @config
+            - @template
+            - @dbal.conn
+            - %core.php_ext%
+            - %core.root_path%
+            - @user
+        tags:
+            - { name: board3.module }
diff --git a/controller/main.php b/controller/main.php
index f5685b38..9c64e6cf 100644
--- a/controller/main.php
+++ b/controller/main.php
@@ -65,6 +65,12 @@ class main
 	*/
 	protected $path_helper;
 
+	/**
+	* Board3 Modules service collection
+	* @var phpbb\di\service_collection
+	*/
+	protected $modules;
+
 	/**
 	* Constructor
 	* NOTE: The parameters of this method must match in order and type with
@@ -76,8 +82,10 @@ class main
 	* @param \phpbb\path_helper $path_helper phpBB path helper
 	* @param string $phpbb_root_path phpBB root path
 	* @param string $php_ext PHP file extension
+	* @param \phpbb\di\service_collection $modules Board3 Modules service
+	*						collection
 	*/
-	public function __construct($auth, $config, $template, $user, $path_helper, $phpbb_root_path, $php_ext)
+	public function __construct($auth, $config, $template, $user, $path_helper, $phpbb_root_path, $php_ext, $modules)
 	{
 		global $portal_root_path;
 
@@ -88,6 +96,8 @@ class main
 		$this->path_helper = $path_helper;
 		$this->phpbb_root_path = $phpbb_root_path;
 		$this->php_ext = $php_ext;
+		$this->register_modules($modules);
+
 		$this->includes_path = $phpbb_root_path . 'ext/board3/portal/portal/';
 		$this->root_path = $phpbb_root_path . 'ext/board3/portal/';
 		$portal_root_path = $this->root_path;
@@ -100,6 +110,25 @@ class main
 		}
 	}
 
+	/**
+	* Register list of Board3 Portal modules
+	*
+	* @param \phpbb\di\service_collection $modules Board3 Modules service
+	*						collection
+	* @return void
+	*/
+	protected function register_modules($modules)
+	{
+		foreach ($modules as $current_module)
+		{
+			$class_name = '\\' . get_class($current_module);
+			if (!isset($this->modules[$class_name]))
+			{
+				$this->modules[$class_name] = $current_module;
+			}
+		}
+	}
+
 	/**
 	* Extension front handler method. This is called automatically when your extension is accessed
 	* through index.php?ext=example/foobar
@@ -145,17 +174,28 @@ class main
 				continue;
 			}
 
-			$class_name = 'portal_' . $row['module_classname'] . '_module';
-			if (!class_exists($class_name))
+			// Do not try to load non-existant modules
+			if (!isset($this->modules[$row['module_classname']]))
 			{
-				include("{$this->includes_path}modules/portal_{$row['module_classname']}{$this->php_ext}");
-			}
-			if (!class_exists($class_name))
-			{
-				trigger_error(sprintf($this->user->lang['CLASS_NOT_FOUND'], $class_name, 'portal_' . $row['module_classname']), E_USER_ERROR);
-			}
+				if (file_exists("{$this->includes_path}modules/portal_{$row['module_classname']}{$this->php_ext}"))
+				{
+					include("{$this->includes_path}modules/portal_{$row['module_classname']}{$this->php_ext}");
+				}
 
-			$module = new $class_name();
+				$class_name = 'portal_' . $row['module_classname'] . '_module';
+				if (class_exists($class_name))
+				{
+					$module = new $class_name();
+				}
+				else
+				{
+					continue;
+				}
+			}
+			else
+			{
+				$module = $this->modules[$row['module_classname']];
+			}
 
 			/**
 			* Check for permissions before loading anything
@@ -167,9 +207,9 @@ class main
 				continue;
 			}
 
-			if ($module->language)
+			if ($language_file = $module->get_language())
 			{
-				$this->user->add_lang_ext('board3/portal', 'mods/portal/' . $module->language);
+				$this->user->add_lang_ext('board3/portal', 'mods/portal/' . $language_file);
 			}
 			if ($row['module_column'] == column_string_num('left') && $this->config['board3_left_column'])
 			{
diff --git a/modules/module_base.php b/modules/module_base.php
new file mode 100644
index 00000000..b266f1c5
--- /dev/null
+++ b/modules/module_base.php
@@ -0,0 +1,96 @@
+<?php
+/**
+*
+* @package Board3 Portal v2.1
+* @copyright (c) 2013 Board3 Group ( www.board3.de )
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+namespace board3\portal\modules;
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* @package module_base
+*/
+class module_base implements module_interface
+{
+	/**
+	* @inheritdoc
+	*/
+	public function get_allowed_columns()
+	{
+		return $this->columns;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_name()
+	{
+		return $this->name;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_image()
+	{
+		return $this->image_src;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_language()
+	{
+		return $this->language;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_template_side($module_id)
+	{
+		return;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_template_center($module_id)
+	{
+		return;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_template_acp($module_id)
+	{
+		return false;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function install($module_id)
+	{
+		return true;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function uninstall($module_id)
+	{
+		return true;
+	}
+}
diff --git a/modules/module_interface.php b/modules/module_interface.php
new file mode 100644
index 00000000..b6e49d6b
--- /dev/null
+++ b/modules/module_interface.php
@@ -0,0 +1,108 @@
+<?php
+/**
+*
+* @package Board3 Portal v2.1
+* @copyright (c) 2013 Board3 Group ( www.board3.de )
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+namespace board3\portal\modules;
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* @package module_interface
+*/
+interface module_interface
+{
+	/**
+	* Get allowed columns
+	* Allowed columns: Just sum up your options (Exp: left + right = 10)
+	* top		1
+	* left		2
+	* center	4
+	* right		8
+	* bottom	16
+	*
+	* @return int Allowed columns
+	*/
+	public function get_allowed_columns();
+
+	/**
+	* Get module name
+	*
+	* @return string Module name, e.g. BOARD3_NEWS
+	*/
+	public function get_name();
+
+	/**
+	* Get default module image:
+	* file must be in "{T_THEME_PATH}/images/portal/"
+	*
+	* @return string Module image file
+	*/
+	public function get_image();
+
+	/**
+	* Get module language file
+	* File must be in "board3/portal/language/{$user->lang}/portal/" or
+	* this should return false.
+	*
+	* @return string|bool Language file or false
+	*/
+	public function get_language();
+
+	/**
+	* Get template file for side columns
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return string Module template file
+	*/
+	public function get_template_side($module_id);
+
+	/**
+	* Get template file for center columns
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return string Module template file
+	*/
+	public function get_template_center($module_id);
+
+	/**
+	* Get acp settings
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return array ACP settings for module
+	*/
+	public function get_template_acp($module_id);
+
+	/**
+	* Install module
+	* Executes any additional commands for installing the module
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return bool True if install was successful, false if not
+	*/
+	public function install($module_id);
+
+	/**
+	* Uninstall module
+	* Executes any additional commands for uninstalling the module
+	*
+	* @param int $module_id Module's ID
+	*
+	* @return bool True if uninstall was successful, false if not
+	*/
+	public function uninstall($module_id);
+}
diff --git a/modules/stylechanger.php b/modules/stylechanger.php
new file mode 100644
index 00000000..432fa333
--- /dev/null
+++ b/modules/stylechanger.php
@@ -0,0 +1,113 @@
+<?php
+/**
+*
+* @package Board3 Portal v2.1
+* @copyright (c) Board3 Group ( www.board3.de )
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+namespace board3\portal\modules;
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* @package Stylechanger
+*/
+class stylechanger extends module_base
+{
+	/**
+	* Allowed columns: Just sum up your options (Exp: left + right = 10)
+	* top		1
+	* left		2
+	* center	4
+	* right		8
+	* bottom	16
+	*/
+	public $columns = 10;
+
+	/**
+	* Default modulename
+	*/
+	public $name = 'BOARD_STYLE';
+
+	/**
+	* Default module-image:
+	* file must be in "{T_THEME_PATH}/images/portal/"
+	*/
+	public $image_src = 'portal_style.png';
+
+	/**
+	* module-language file
+	* file must be in "language/{$user->lang}/mods/portal/"
+	*/
+	public $language = 'portal_stylechanger_module';
+
+	public function __construct($config, $template, $db, $phpEx, $phpbb_root_path, $user)
+	{
+		$this->config = $config;
+		$this->template = $template;
+		$this->db = $db;
+		$this->php_ext = $phpEx;
+		$this->phpbb_root_path = $phpbb_root_path;
+		$this->user = $user;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_template_side($module_id)
+	{
+		$style_count = 0;
+		$style_select = '';
+		$sql = 'SELECT style_id, style_name
+			FROM ' . STYLES_TABLE . '
+			WHERE style_active = 1
+			ORDER BY LOWER(style_name) ASC';
+		$result = $this->db->sql_query($sql);
+		while ($row = $this->db->sql_fetchrow($result))
+		{
+			$style = request_var('style', 0);
+			if (!empty($style))
+			{
+				$url = str_replace('style=' . $style, 'style=' . $row['style_id'], append_sid("{$this->phpbb_root_path}app.{$this->php_ext}/portal"));
+			}
+			else
+			{
+				$url = append_sid("{$this->phpbb_root_path}app.{$this->php_ext}/portal", 'style=' . $row['style_id']);
+			}
+			++$style_count;
+			$style_select .= '<option value="' . $url . '"' . ($row['style_id'] == $this->user->style['style_id'] ? ' selected="selected"' : '') . '>' . htmlspecialchars($row['style_name']) . '</option>';
+		}
+		$this->db->sql_freeresult($result);
+		if(strlen($style_select))
+		{
+			$this->template->assign_var('STYLE_SELECT', $style_select);
+		}
+
+
+		// Assign specific vars
+		$this->template->assign_vars(array(
+			'S_STYLE_OPTIONS'			=> ($this->config['override_user_style'] || $style_count < 2) ? '' : style_select($this->user->data['user_style']),
+		));
+
+		return 'stylechanger_side.html';
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_template_acp($module_id)
+	{
+		return array(
+			'title'	=> 'BOARD_STYLE',
+			'vars'	=> array(),
+		);
+	}
+}
diff --git a/portal/modules/portal_announcements.php b/portal/modules/portal_announcements.php
index d79cad51..7d7b678e 100644
--- a/portal/modules/portal_announcements.php
+++ b/portal/modules/portal_announcements.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Modulname
 */
-class portal_announcements_module
+class portal_announcements_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_attachments.php b/portal/modules/portal_attachments.php
index f10f468b..1e2c0624 100644
--- a/portal/modules/portal_attachments.php
+++ b/portal/modules/portal_attachments.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Modulname
 */
-class portal_attachments_module
+class portal_attachments_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_birthday_list.php b/portal/modules/portal_birthday_list.php
index 39845ef3..79ca6482 100644
--- a/portal/modules/portal_birthday_list.php
+++ b/portal/modules/portal_birthday_list.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Birthday List
 */
-class portal_birthday_list_module
+class portal_birthday_list_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_calendar.php b/portal/modules/portal_calendar.php
index f885e3a3..61c60100 100644
--- a/portal/modules/portal_calendar.php
+++ b/portal/modules/portal_calendar.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Calendar
 */
-class portal_calendar_module
+class portal_calendar_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_clock.php b/portal/modules/portal_clock.php
index dd9faa87..89d05db0 100644
--- a/portal/modules/portal_clock.php
+++ b/portal/modules/portal_clock.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Clock
 */
-class portal_clock_module
+class portal_clock_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_custom.php b/portal/modules/portal_custom.php
index 13007490..f9374308 100644
--- a/portal/modules/portal_custom.php
+++ b/portal/modules/portal_custom.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Custom
 */
-class portal_custom_module
+class portal_custom_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_default.php b/portal/modules/portal_default.php
index eb4fa244..5bf6dc39 100644
--- a/portal/modules/portal_default.php
+++ b/portal/modules/portal_default.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Modulname
 */
-class portal_modulename_module
+class portal_modulename_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_donation.php b/portal/modules/portal_donation.php
index 04ed6939..d698c7a6 100644
--- a/portal/modules/portal_donation.php
+++ b/portal/modules/portal_donation.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Donation
 */
-class portal_donation_module
+class portal_donation_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_forumlist.php b/portal/modules/portal_forumlist.php
index f26322e0..12a04219 100644
--- a/portal/modules/portal_forumlist.php
+++ b/portal/modules/portal_forumlist.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Forumlist
 */
-class portal_forumlist_module
+class portal_forumlist_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_friends.php b/portal/modules/portal_friends.php
index 748bd0ed..a04b5eb3 100644
--- a/portal/modules/portal_friends.php
+++ b/portal/modules/portal_friends.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Friends
 */
-class portal_friends_module
+class portal_friends_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_latest_bots.php b/portal/modules/portal_latest_bots.php
index 4a9e85df..f4e6cb15 100755
--- a/portal/modules/portal_latest_bots.php
+++ b/portal/modules/portal_latest_bots.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Latest Bots
 */
-class portal_latest_bots_module
+class portal_latest_bots_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_latest_members.php b/portal/modules/portal_latest_members.php
index 501a8970..a788a933 100644
--- a/portal/modules/portal_latest_members.php
+++ b/portal/modules/portal_latest_members.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Modulname
 */
-class portal_latest_members_module
+class portal_latest_members_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_leaders.php b/portal/modules/portal_leaders.php
index 0e618393..bb267d26 100644
--- a/portal/modules/portal_leaders.php
+++ b/portal/modules/portal_leaders.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Leaders
 */
-class portal_leaders_module
+class portal_leaders_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_link_us.php b/portal/modules/portal_link_us.php
index 2f16e488..818f6b3c 100644
--- a/portal/modules/portal_link_us.php
+++ b/portal/modules/portal_link_us.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Clock
 */
-class portal_link_us_module
+class portal_link_us_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_links.php b/portal/modules/portal_links.php
index fc82e7c3..9cae9a1f 100644
--- a/portal/modules/portal_links.php
+++ b/portal/modules/portal_links.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Links
 */
-class portal_links_module
+class portal_links_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_main_menu.php b/portal/modules/portal_main_menu.php
index ce065583..1ce257fd 100644
--- a/portal/modules/portal_main_menu.php
+++ b/portal/modules/portal_main_menu.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Main Menu
 */
-class portal_main_menu_module
+class portal_main_menu_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_news.php b/portal/modules/portal_news.php
index b5dce512..6d5045d5 100644
--- a/portal/modules/portal_news.php
+++ b/portal/modules/portal_news.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package News
 */
-class portal_news_module
+class portal_news_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_poll.php b/portal/modules/portal_poll.php
index 2fe95581..828d8dc4 100644
--- a/portal/modules/portal_poll.php
+++ b/portal/modules/portal_poll.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Poll
 */
-class portal_poll_module
+class portal_poll_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_random_member.php b/portal/modules/portal_random_member.php
index 540b893a..70d14aa6 100644
--- a/portal/modules/portal_random_member.php
+++ b/portal/modules/portal_random_member.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Random Member
 */
-class portal_random_member_module
+class portal_random_member_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_recent.php b/portal/modules/portal_recent.php
index 0c3061e4..ccf6a28f 100644
--- a/portal/modules/portal_recent.php
+++ b/portal/modules/portal_recent.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Recent
 */
-class portal_recent_module
+class portal_recent_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_search.php b/portal/modules/portal_search.php
index 65267e86..0e0a3880 100644
--- a/portal/modules/portal_search.php
+++ b/portal/modules/portal_search.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Search
 */
-class portal_search_module
+class portal_search_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_statistics.php b/portal/modules/portal_statistics.php
index 59c030c6..4da2187c 100644
--- a/portal/modules/portal_statistics.php
+++ b/portal/modules/portal_statistics.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Statistics
 */
-class portal_statistics_module
+class portal_statistics_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_stylechanger.php b/portal/modules/portal_stylechanger.php
index 8f5fee1f..063fe1db 100644
--- a/portal/modules/portal_stylechanger.php
+++ b/portal/modules/portal_stylechanger.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Stylechanger
 */
-class portal_stylechanger_module
+class portal_stylechanger_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_topposters.php b/portal/modules/portal_topposters.php
index 086749c2..bb9f2776 100644
--- a/portal/modules/portal_topposters.php
+++ b/portal/modules/portal_topposters.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Topposters
 */
-class portal_topposters_module
+class portal_topposters_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_user_menu.php b/portal/modules/portal_user_menu.php
index 407b1bf6..b778a416 100644
--- a/portal/modules/portal_user_menu.php
+++ b/portal/modules/portal_user_menu.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Modulname
 */
-class portal_user_menu_module
+class portal_user_menu_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_welcome.php b/portal/modules/portal_welcome.php
index 7e55916d..3300bd7c 100644
--- a/portal/modules/portal_welcome.php
+++ b/portal/modules/portal_welcome.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Welcome
 */
-class portal_welcome_module
+class portal_welcome_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)
diff --git a/portal/modules/portal_whois_online.php b/portal/modules/portal_whois_online.php
index ce8de3c5..7b48481c 100644
--- a/portal/modules/portal_whois_online.php
+++ b/portal/modules/portal_whois_online.php
@@ -18,7 +18,7 @@ if (!defined('IN_PHPBB'))
 /**
 * @package Who is online
 */
-class portal_whois_online_module
+class portal_whois_online_module extends \board3\portal\modules\module_base
 {
 	/**
 	* Allowed columns: Just sum up your options (Exp: left + right = 10)