diff --git a/phpBB/includes/acp/acp_permissions.php b/phpBB/includes/acp/acp_permissions.php
index dcf524d64c..164970b5d5 100644
--- a/phpBB/includes/acp/acp_permissions.php
+++ b/phpBB/includes/acp/acp_permissions.php
@@ -762,7 +762,14 @@ class acp_permissions
 
 		$this->log_action($mode, 'add', $permission_type, $ug_type, $ug_ids, $forum_ids);
 
-		trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action . '&forum_id[]=' . implode('&forum_id[]=', $forum_ids)));
+		if ($mode == 'setting_forum_local' || $mode == 'setting_mod_local')
+		{
+			trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action . '&forum_id[]=' . implode('&forum_id[]=', $forum_ids)));
+		}
+		else
+		{
+			trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action));
+		}
 	}
 
 	/**
@@ -829,7 +836,14 @@ class acp_permissions
 
 		$this->log_action($mode, 'del', $permission_type, $ug_type, (($ug_type == 'user') ? $user_id : $group_id), (sizeof($forum_id) ? $forum_id : array(0 => 0)));
 
-		trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action . '&forum_id[]=' . implode('&forum_id[]=', $forum_id)));
+		if ($mode == 'setting_forum_local' || $mode == 'setting_mod_local')
+		{
+			trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action . '&forum_id[]=' . implode('&forum_id[]=', $forum_id)));
+		}
+		else
+		{
+			trigger_error($user->lang['AUTH_UPDATED'] . adm_back_link($this->u_action));
+		}
 	}
 
 	/**