diff --git a/config/services.yml b/config/services.yml
index 64e5b52c..1198d358 100644
--- a/config/services.yml
+++ b/config/services.yml
@@ -51,7 +51,9 @@ services:
             - '@auth'
             - '@config'
             - '@controller.helper'
+            - '@dbal.conn'
             - '@request'
+            - '%tables.styles%'
 
     board3.portal.columns:
         class: board3\portal\portal\columns
diff --git a/controller/helper.php b/controller/helper.php
index 283f97d4..6c3198ae 100644
--- a/controller/helper.php
+++ b/controller/helper.php
@@ -230,16 +230,9 @@ class helper
 	*/
 	public function assign_module_vars($row, $template_module)
 	{
-		$use_fa = 0;
-		$fa_styles = explode(';', $this->config['board3_portal_fa_styles']);
-		foreach ($fa_styles as $fa_style)
-		{
-			if ($this->user->style['style_name'] == $fa_style)
-			{
-				$use_fa = 1;
-				break;
-			}
-		}
+		$fa_styles = json_decode($this->config['board3_portal_fa_styles']);
+		$use_fa = !empty($fa_styles) && in_array($this->user->style['style_name'], $fa_styles);
+
 		if (is_array($template_module))
 		{
 			$this->template->assign_block_vars('modules_' . $this->portal_columns->number_to_string($row['module_column']), array(
@@ -250,8 +243,8 @@ class helper
 				'MODULE_ID'			=> $row['module_id'],
 				'IMAGE_WIDTH'			=> $row['module_image_width'],
 				'IMAGE_HEIGHT'			=> $row['module_image_height'],
-				'FA_ICON'				=> utf8_htmlspecialchars($row['module_fa_icon']),
-				'FA_SIZE'				=> $row['module_fa_size'],
+				'FA_ICON'				=> isset($row['module_fa_icon']) ? utf8_htmlspecialchars($row['module_fa_icon']) : '',
+				'FA_SIZE'				=> $row['module_fa_size'] ?? '',
 				'FA_ENABLED'			=> $use_fa,
 			));
 		}
@@ -264,8 +257,8 @@ class helper
 				'IMAGE_HEIGHT'			=> $row['module_image_height'],
 				'MODULE_ID'			=> $row['module_id'],
 				'TITLE'				=> (isset($this->user->lang[$row['module_name']])) ? $this->user->lang[$row['module_name']] : utf8_normalize_nfc($row['module_name']),
-				'FA_ICON'			=> utf8_htmlspecialchars($row['module_fa_icon']),
-				'FA_SIZE'			=> $row['module_fa_size'],
+				'FA_ICON'			=> isset($row['module_fa_icon']) ? utf8_htmlspecialchars($row['module_fa_icon']) : '',
+				'FA_SIZE'			=> $row['module_fa_size'] ?? '',
 				'FA_ENABLED'		=> $use_fa,
 			));
 		}
diff --git a/includes/modules_helper.php b/includes/modules_helper.php
index 5b778dc1..96e0f93a 100644
--- a/includes/modules_helper.php
+++ b/includes/modules_helper.php
@@ -25,6 +25,9 @@ class modules_helper
 	*/
 	protected $config;
 
+	/** @var \phpbb\db\driver\driver_interface */
+	protected $db;
+
 	/** @var \phpbb\controller\helper Controller helper */
 	protected $controller_helper;
 
@@ -34,6 +37,9 @@ class modules_helper
 	*/
 	protected $request;
 
+	/** @var string Styles table */
+	protected $styles_table;
+
 	/**
 	* Constructor
 	* NOTE: The parameters of this method must match in order and type with
@@ -41,14 +47,18 @@ class modules_helper
 	* @param \phpbb\auth\auth $auth Auth object
 	* @param \phpbb\config\config $config phpBB config
 	* @param \phpbb\controller\helper $controller_helper Controller helper
+	* @param \phpbb\db\driver\driver_interface $db Dbal connection
 	* @param \phpbb\request\request $request phpBB request
+	* @param string $styles_table Styles table
 	*/
-	public function __construct($auth, $config, $controller_helper, $request)
+	public function __construct($auth, $config, $controller_helper, $db, $request, string $styles_table)
 	{
 		$this->auth = $auth;
 		$this->config = $config;
 		$this->controller_helper = $controller_helper;
+		$this->db = $db;
 		$this->request = $request;
+		$this->styles_table = $styles_table;
 	}
 
 	/**
@@ -194,30 +204,27 @@ class modules_helper
 	*
 	* @return string Select with available styles
 	*/
-	public function display_fa_styles()
+	public function display_fa_styles(): string
 	{
-		global $phpbb_container;
-		$table_prefix = $phpbb_container->getParameter('core.table_prefix');
-		$db = $phpbb_container->get('dbal.conn');
-		$selected = explode(';', $this->config['board3_portal_fa_styles']);
+		$portal_fa_styles = json_decode($this->config->offsetGet('board3_portal_fa_styles'));
+		if (!$portal_fa_styles)
+		{
+			$portal_fa_styles = [];
+		}
 		$options = '';
 		$query = 'SELECT style_name
-			FROM ' . $table_prefix . 'styles';
-		$result = $db->sql_query($query);
-		while ($row = $db->sql_fetchrow($result))
+			FROM ' . $this->styles_table;
+		$result = $this->db->sql_query($query);
+		while ($row = $this->db->sql_fetchrow($result))
 		{
 			$options .= '<option value="' . $row['style_name'] . '"';
-			foreach ($selected as $style)
+			if (in_array($row['style_name'], $portal_fa_styles))
 			{
-				if ($style == $row['style_name'])
-				{
-					$options .= ' selected';
-					break;
-				}
+				$options .= ' selected';
 			}
 			$options .= '>' . $row['style_name'] . '</option>';
 		}
-		$db->sql_freeresult($result);
+		$this->db->sql_freeresult($result);
 		return '<select id="board3_fa_styles" name="board3_fa_styles[]" multiple>' . $options . '</select>';
 	}
 
@@ -226,15 +233,9 @@ class modules_helper
 	*
 	* @param string $key Key of the parameter
 	*/
-	public function store_fa_styles($key)
+	public function store_fa_styles(string $key): void
 	{
-		$style_array = $this->request->variable($key, array(''));
-		$styles = '';
-		foreach ($style_array as $style)
-		{
-			$styles .= ($styles == '' ? '' : ';') . $style;
-		}
-		var_dump($styles);
-		$this->config->set('board3_portal_fa_styles', $styles);
+		$style_array = $this->request->variable($key, ['']);
+		$this->config->set('board3_portal_fa_styles', json_encode($style_array));
 	}
 }
diff --git a/tests/unit/acp/move_module_test.php b/tests/unit/acp/move_module_test.php
index f14d051a..0990fe0b 100644
--- a/tests/unit/acp/move_module_test.php
+++ b/tests/unit/acp/move_module_test.php
@@ -65,6 +65,7 @@ class phpbb_acp_move_module_test extends \board3\portal\tests\testframework\data
 		$phpbb_container = new \phpbb_mock_container_builder();
 		// Mock module service collection
 		$config = new \phpbb\config\config([]);
+		$db = $this->db;
 		$auth = $this->getMockBuilder('\phpbb\auth\auth')
 			->setMethods(['acl_get'])
 			->getMock();
@@ -74,7 +75,7 @@ class phpbb_acp_move_module_test extends \board3\portal\tests\testframework\data
 			->will($this->returnValue(true));
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$modules_helper = new \board3\portal\includes\modules_helper($auth, $config, $controller_helper, new \phpbb_mock_request);
+		$modules_helper = new \board3\portal\includes\modules_helper($auth, $config, $controller_helper, $db, new \phpbb_mock_request, $table_prefix . 'styles');
 		$phpbb_container->set('board3.portal.module_collection',
 			array(
 				new \board3\portal\modules\clock($config, $template),
@@ -84,9 +85,10 @@ class phpbb_acp_move_module_test extends \board3\portal\tests\testframework\data
 			));
 		$this->portal_helper = new \board3\portal\includes\helper($phpbb_container->get('board3.portal.module_collection'));
 		$phpbb_container->set('board3.portal.helper', $this->portal_helper);
-		$phpbb_container->set('board3.portal.modules_helper', new \board3\portal\includes\modules_helper(new \phpbb\auth\auth(), $config, $controller_helper, $request));
+		$phpbb_container->set('board3.portal.modules_helper', $modules_helper);
 		$phpbb_container->setParameter('board3.portal.modules.table', $table_prefix . 'portal_modules');
 		$phpbb_container->setParameter('board3.portal.config.table', $table_prefix . 'portal_config');
+		$phpbb_container->setParameter('core.table_prefix', $table_prefix);
 		$this->portal_columns = new \board3\portal\portal\columns();
 		$phpbb_container->set('board3.portal.columns', $this->portal_columns);
 		$cache = $this->getMockBuilder('\phpbb\cache\service')
@@ -114,7 +116,6 @@ class phpbb_acp_move_module_test extends \board3\portal\tests\testframework\data
 			->method('sql_save')
 			->with($this->anything())
 			->will($this->returnArgument(2));
-		$db = $this->db;
 		$this->language->set(array(
 			'UNABLE_TO_MOVE'	=> 'UNABLE_TO_MOVE',
 			'UNABLE_TO_MOVE_ROW'	=> 'UNABLE_TO_MOVE_ROW',
@@ -208,6 +209,8 @@ class phpbb_acp_move_module_test extends \board3\portal\tests\testframework\data
 			'module_image_height' => '0',
 			'module_group_ids' => '',
 			'module_status' => '1',
+			'module_fa_icon'	=> '',
+			'module_fa_size'	=> '16',
 		), $module_data);
 	}
 
diff --git a/tests/unit/controller/helper_test.php b/tests/unit/controller/helper_test.php
index 15221289..dee7ef67 100644
--- a/tests/unit/controller/helper_test.php
+++ b/tests/unit/controller/helper_test.php
@@ -43,6 +43,7 @@ class helper_test extends \board3\portal\tests\testframework\test_case
 		$this->language = new \board3\portal\tests\mock\language($this->language_file_loader);
 		$this->user = new \phpbb\user($this->language, '\phpbb\datetime');
 		$this->user->data['group_id'] = 2;
+		$this->user->style['style_name'] = 'prosilver';
 		$this->phpbb_root_path = dirname(__FILE__) . '/../../../../../../';
 		$phpbb_extension_manager = new \phpbb_mock_extension_manager($this->phpbb_root_path, array('board3/portal'));
 		$this->language_file_loader->set_extension_manager($phpbb_extension_manager);
diff --git a/tests/unit/functions/fetch_news_test.php b/tests/unit/functions/fetch_news_test.php
index 03dda888..17728883 100644
--- a/tests/unit/functions/fetch_news_test.php
+++ b/tests/unit/functions/fetch_news_test.php
@@ -19,7 +19,7 @@ class phpbb_functions_fetch_news_test extends \board3\portal\tests\testframework
 	{
 		parent::setUp();
 
-		global $auth, $cache, $config, $phpbb_container, $phpbb_dispatcher, $template, $user, $phpbb_root_path, $phpEx;
+		global $auth, $cache, $config, $phpbb_container, $phpbb_dispatcher, $template, $user, $phpbb_root_path, $phpEx, $table_prefix;
 
 		$config = new \phpbb\config\config([
 			'allow_nocensors'	=> false,
@@ -71,7 +71,7 @@ class phpbb_functions_fetch_news_test extends \board3\portal\tests\testframework
 		$phpbb_container = new \phpbb_mock_container_builder();
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$this->modules_helper = new \board3\portal\includes\modules_helper($auth, $this->config, $controller_helper, $request);
+		$this->modules_helper = new \board3\portal\includes\modules_helper($auth, $this->config, $controller_helper, $this->db, $request, $table_prefix . 'styles');
 		$phpbb_container->set('board3.portal.modules_helper', $this->modules_helper);
 		$phpbb_container->set('board3.portal.fetch_posts', new \board3\portal\portal\fetch_posts($auth, $cache, $this->config, $this->db, $this->modules_helper, $user));
 		$template = $this->getMockBuilder('\phpbb\template')
diff --git a/tests/unit/includes/modules_helper_test.php b/tests/unit/includes/modules_helper_test.php
index b7e023b4..9616f41c 100644
--- a/tests/unit/includes/modules_helper_test.php
+++ b/tests/unit/includes/modules_helper_test.php
@@ -26,7 +26,7 @@ class board3_includes_modules_helper_test extends \board3\portal\tests\testframe
 
 	public function setUp(): void
 	{
-		global $phpbb_root_path, $phpEx, $phpbb_dispatcher;
+		global $phpbb_root_path, $phpEx, $phpbb_dispatcher, $table_prefix;
 
 		parent::setUp();
 
@@ -35,7 +35,6 @@ class board3_includes_modules_helper_test extends \board3\portal\tests\testframe
 		$request = new \phpbb_mock_request(array('foo' => array('bar')));
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$phpbb_container = new \phpbb_mock_container_builder();
 		$phpbb_dispatcher = $this->getMockBuilder('\phpbb\event\dispatcher')
 			->setMethods(['trigger_event'])
 			->getMock();
@@ -44,7 +43,7 @@ class board3_includes_modules_helper_test extends \board3\portal\tests\testframe
 			->with($this->anything())
 			->will($this->returnArgument(1));
 
-		$this->modules_helper = new \board3\portal\includes\modules_helper($auth, $this->config, $controller_helper, $request);
+		$this->modules_helper = new \board3\portal\includes\modules_helper($auth, $this->config, $controller_helper, $this->db, $request, $table_prefix . 'styles');
 		$phpbb_dispatcher = new \phpbb_mock_event_dispatcher();
 	}
 
diff --git a/tests/unit/modules/calendar_test.php b/tests/unit/modules/calendar_test.php
index 9a60d8e9..8b6a7059 100644
--- a/tests/unit/modules/calendar_test.php
+++ b/tests/unit/modules/calendar_test.php
@@ -38,7 +38,7 @@ class phpbb_unit_modules_calendar_test extends \board3\portal\tests\testframewor
 	public function setUp(): void
 	{
 		parent::setUp();
-		global $cache, $config, $phpbb_root_path, $phpEx, $phpbb_dispatcher, $request, $user;
+		global $cache, $config, $phpbb_root_path, $phpEx, $phpbb_dispatcher, $request, $user, $table_prefix;
 
 		$this->path_helper = new \phpbb\path_helper(
 			new \phpbb\symfony_request(
@@ -65,7 +65,7 @@ class phpbb_unit_modules_calendar_test extends \board3\portal\tests\testframewor
 		$this->template = new \board3\portal\tests\mock\template($this);
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$modules_helper = new \board3\portal\includes\modules_helper(new \phpbb\auth\auth(), new \phpbb\config\config(array()), $controller_helper, new \phpbb_mock_request());
+		$modules_helper = new \board3\portal\includes\modules_helper(new \phpbb\auth\auth(), new \phpbb\config\config(array()), $controller_helper, $this->db, new \phpbb_mock_request(), $table_prefix . 'styles');
 		$request = $this->request = new \phpbb_mock_request();
 		$this->language_file_loader = new \phpbb\language\language_file_loader($phpbb_root_path, 'php');
 		$this->language = new \board3\portal\tests\mock\language($this->language_file_loader);
diff --git a/tests/unit/portal/fetch_posts_test.php b/tests/unit/portal/fetch_posts_test.php
index 27c114b5..2d9481eb 100644
--- a/tests/unit/portal/fetch_posts_test.php
+++ b/tests/unit/portal/fetch_posts_test.php
@@ -22,7 +22,7 @@ class phpbb_portal_fetch_posts_test extends \board3\portal\tests\testframework\d
 
 	public function setUp(): void
 	{
-		global $auth, $cache, $config, $phpbb_dispatcher, $phpbb_root_path, $phpEx, $template, $user;
+		global $auth, $cache, $config, $phpbb_dispatcher, $phpbb_root_path, $phpEx, $template, $user, $table_prefix;
 
 		parent::setUp();
 
@@ -76,7 +76,7 @@ class phpbb_portal_fetch_posts_test extends \board3\portal\tests\testframework\d
 		$this->auth = $auth;
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$this->modules_helper = new \board3\portal\includes\modules_helper($auth, $this->config, $controller_helper, new phpbb_mock_request());
+		$this->modules_helper = new \board3\portal\includes\modules_helper($auth, $this->config, $controller_helper, $this->db, new phpbb_mock_request(), $table_prefix . 'styles');
 		$this->user = $user;
 		$template = $this->getMockBuilder('\phpbb\template')
 			->setMethods(['set_filenames', 'destroy_block_vars', 'assign_block_vars', 'assign_display'])
diff --git a/tests/unit/portal/modules_manager_confirm_box_test.php b/tests/unit/portal/modules_manager_confirm_box_test.php
index 141482b6..f1ef71a8 100644
--- a/tests/unit/portal/modules_manager_confirm_box_test.php
+++ b/tests/unit/portal/modules_manager_confirm_box_test.php
@@ -39,7 +39,7 @@ class modules_manager_confirm_box_test extends \board3\portal\tests\testframewor
 
 	public function setUp(): void
 	{
-		global $cache, $db, $portal_config, $phpbb_root_path, $phpEx;
+		global $cache, $db, $portal_config, $phpbb_root_path, $phpEx, $table_prefix;
 
 		parent::setUp();
 
@@ -56,7 +56,7 @@ class modules_manager_confirm_box_test extends \board3\portal\tests\testframewor
 
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$modules_helper = new \board3\portal\includes\modules_helper($auth, $config, $controller_helper, $this->request);
+		$modules_helper = new \board3\portal\includes\modules_helper($auth, $config, $controller_helper, $this->db, $this->request, $table_prefix . 'styles');
 
 		$this->portal_helper = new \board3\portal\includes\helper(array(
 			new \board3\portal\modules\clock($config, null),
diff --git a/tests/unit/portal/modules_manager_test.php b/tests/unit/portal/modules_manager_test.php
index 8f06f80d..19c2ee10 100644
--- a/tests/unit/portal/modules_manager_test.php
+++ b/tests/unit/portal/modules_manager_test.php
@@ -33,7 +33,7 @@ class board3_portal_modules_manager_test extends \board3\portal\tests\testframew
 
 	public function setUp(): void
 	{
-		global $cache, $db, $phpbb_root_path, $phpEx;
+		global $cache, $db, $phpbb_root_path, $phpEx, $table_prefix;
 
 		parent::setUp();
 
@@ -47,7 +47,7 @@ class board3_portal_modules_manager_test extends \board3\portal\tests\testframew
 
 		$controller_helper = new \board3\portal\tests\mock\controller_helper($phpbb_root_path, $phpEx);
 		$controller_helper->add_route('board3_portal_controller', 'portal');
-		$modules_helper = new \board3\portal\includes\modules_helper($auth, $config, $controller_helper, $request);
+		$modules_helper = new \board3\portal\includes\modules_helper($auth, $config, $controller_helper, $this->db, $request, $table_prefix . 'styles');
 
 		$portal_helper = new \board3\portal\includes\helper(array(
 			new \board3\portal\modules\clock($config, null),