diff --git a/phpBB/includes/acp/acp_permission_roles.php b/phpBB/includes/acp/acp_permission_roles.php
index e830479389..8a2798a90a 100644
--- a/phpBB/includes/acp/acp_permission_roles.php
+++ b/phpBB/includes/acp/acp_permission_roles.php
@@ -456,7 +456,10 @@ class acp_permission_roles
 	*/
 	function display_auth_options($auth_options)
 	{
-		global $template, $user;
+		global $template, $user, $phpbb_container;
+
+		$permissions = $phpbb_container->get('acl.permissions');
+		$permission_categories = $permissions->get_categories();
 
 		$content_array = $categories = array();
 		$key_sort_array = array(0);
@@ -473,7 +476,7 @@ class acp_permission_roles
 		foreach ($content_array as $cat => $cat_array)
 		{
 			$template->assign_block_vars('auth', array(
-				'CAT_NAME'	=> $user->lang['permission_cat'][$cat],
+				'CAT_NAME'	=> $user->lang($permission_categories[$cat]),
 
 				'S_YES'		=> ($cat_array['S_YES'] && !$cat_array['S_NEVER'] && !$cat_array['S_NO']) ? true : false,
 				'S_NEVER'	=> ($cat_array['S_NEVER'] && !$cat_array['S_YES'] && !$cat_array['S_NO']) ? true : false,
diff --git a/phpBB/includes/acp/auth.php b/phpBB/includes/acp/auth.php
index 6b1da46a12..03cc0c1705 100644
--- a/phpBB/includes/acp/auth.php
+++ b/phpBB/includes/acp/auth.php
@@ -1100,7 +1100,10 @@ class auth_admin extends phpbb_auth
 	*/
 	function assign_cat_array(&$category_array, $tpl_cat, $tpl_mask, $ug_id, $forum_id, $show_trace = false, $s_view)
 	{
-		global $template, $user, $phpbb_admin_path, $phpEx;
+		global $template, $user, $phpbb_admin_path, $phpEx, $phpbb_container;
+
+		$permissions = $phpbb_container->get('acl.permissions');
+		$permission_categories = $permissions->get_categories();
 
 		@reset($category_array);
 		while (list($cat, $cat_array) = each($category_array))
@@ -1110,8 +1113,8 @@ class auth_admin extends phpbb_auth
 				'S_NEVER'	=> ($cat_array['S_NEVER'] && !$cat_array['S_YES'] && !$cat_array['S_NO']) ? true : false,
 				'S_NO'		=> ($cat_array['S_NO'] && !$cat_array['S_NEVER'] && !$cat_array['S_YES']) ? true : false,
 
-				'CAT_NAME'	=> $user->lang['permission_cat'][$cat])
-			);
+				'CAT_NAME'	=> $user->lang($permission_categories[$cat]),
+			));
 
 			/*	Sort permissions by name (more naturaly and user friendly than sorting by a primary key)
 			*	Commented out due to it's memory consumption and time needed
@@ -1176,7 +1179,10 @@ class auth_admin extends phpbb_auth
 	*/
 	function build_permission_array(&$permission_row, &$content_array, &$categories, $key_sort_array)
 	{
-		global $user;
+		global $user, $phpbb_container;
+
+		$permissions = $phpbb_container->get('acl.permissions');
+		$permission_categories = $permissions->get_categories();
 
 		foreach ($key_sort_array as $forum_id)
 		{
@@ -1204,7 +1210,7 @@ class auth_admin extends phpbb_auth
 				// Build our categories array
 				if (!isset($categories[$cat]))
 				{
-					$categories[$cat] = $user->lang['permission_cat'][$cat];
+					$categories[$cat] = $user->lang($permission_categories[$cat]);
 				}
 
 				// Build our content array
diff --git a/phpBB/includes/permissions.php b/phpBB/includes/permissions.php
index d5389344f7..1e2cf9e4aa 100644
--- a/phpBB/includes/permissions.php
+++ b/phpBB/includes/permissions.php
@@ -107,20 +107,20 @@ class phpbb_permissions
 	);
 
 	protected $categories = array(
-		'actions'		=> 'Actions',
-		'content'		=> 'Content',
-		'forums'		=> 'Forums',
-		'misc'			=> 'Misc',
-		'permissions'	=> 'Permissions',
-		'pm'			=> 'Private messages',
-		'polls'			=> 'Polls',
-		'post'			=> 'Post',
-		'post_actions'	=> 'Post actions',
-		'posting'		=> 'Posting',
-		'profile'		=> 'Profile',
-		'settings'		=> 'Settings',
-		'topic_actions'	=> 'Topic actions',
-		'user_group'	=> 'Users & Groups',
+		'actions'		=> 'ACL_CAT_ACTIONS',
+		'content'		=> 'ACL_CAT_CONTENT',
+		'forums'		=> 'ACL_CAT_FORUMS',
+		'misc'			=> 'ACL_CAT_MISC',
+		'permissions'	=> 'ACL_CAT_PERMISSIONS',
+		'pm'			=> 'ACL_CAT_PM',
+		'polls'			=> 'ACL_CAT_POLLS',
+		'post'			=> 'ACL_CAT_POST',
+		'post_actions'	=> 'ACL_CAT_POST_ACTIONS',
+		'posting'		=> 'ACL_CAT_POSTING',
+		'profile'		=> 'ACL_CAT_PROFILE',
+		'settings'		=> 'ACL_CAT_SETTINGS',
+		'topic_actions'	=> 'ACL_CAT_TOPIC_ACTIONS',
+		'user_group'	=> 'ACL_CAT_USER_GROUP',
 	);
 
 	protected $permissions = array(
diff --git a/phpBB/language/en/acp/permissions_phpbb.php b/phpBB/language/en/acp/permissions_phpbb.php
index 70312261a1..0a669a4b8d 100644
--- a/phpBB/language/en/acp/permissions_phpbb.php
+++ b/phpBB/language/en/acp/permissions_phpbb.php
@@ -65,22 +65,20 @@ if (empty($lang) || !is_array($lang))
 
 // Define categories and permission types
 $lang = array_merge($lang, array(
-	'permission_cat'	=> array(
-		'actions'		=> 'Actions',
-		'content'		=> 'Content',
-		'forums'		=> 'Forums',
-		'misc'			=> 'Misc',
-		'permissions'	=> 'Permissions',
-		'pm'			=> 'Private messages',
-		'polls'			=> 'Polls',
-		'post'			=> 'Post',
-		'post_actions'	=> 'Post actions',
-		'posting'		=> 'Posting',
-		'profile'		=> 'Profile',
-		'settings'		=> 'Settings',
-		'topic_actions'	=> 'Topic actions',
-		'user_group'	=> 'Users & Groups',
-	),
+	'ACL_CAT_ACTIONS'		=> 'Actions',
+	'ACL_CAT_CONTENT'		=> 'Content',
+	'ACL_CAT_FORUMS'		=> 'Forums',
+	'ACL_CAT_MISC'			=> 'Misc',
+	'ACL_CAT_PERMISSIONS'	=> 'Permissions',
+	'ACL_CAT_PM'			=> 'Private messages',
+	'ACL_CAT_POLLS'			=> 'Polls',
+	'ACL_CAT_POST'			=> 'Post',
+	'ACL_CAT_POST_ACTIONS'	=> 'Post actions',
+	'ACL_CAT_POSTING'		=> 'Posting',
+	'ACL_CAT_PROFILE'		=> 'Profile',
+	'ACL_CAT_SETTINGS'		=> 'Settings',
+	'ACL_CAT_TOPIC_ACTIONS'	=> 'Topic actions',
+	'ACL_CAT_USER_GROUP'	=> 'Users & Groups',
 
 
 	'ACL_TYPE_USER'				=> 'User permissions',