diff --git a/phpBB/includes/acp/acp_permissions.php b/phpBB/includes/acp/acp_permissions.php
index 3d4c256a3f..a64765f4f5 100644
--- a/phpBB/includes/acp/acp_permissions.php
+++ b/phpBB/includes/acp/acp_permissions.php
@@ -952,12 +952,7 @@ class acp_permissions
 
 		if ($user_id != $user->data['user_id'])
 		{
-			$sql = 'SELECT user_id, username, user_permissions, user_type
-				FROM ' . USERS_TABLE . '
-				WHERE user_id = ' . $user_id;
-			$result = $db->sql_query($sql);
-			$userdata = $db->sql_fetchrow($result);
-			$db->sql_freeresult($result);
+			$userdata = $auth->obtain_user_data($user_id);
 		}
 		else
 		{
diff --git a/phpBB/includes/auth/auth.php b/phpBB/includes/auth/auth.php
index 1ad9f94d26..2535247571 100644
--- a/phpBB/includes/auth/auth.php
+++ b/phpBB/includes/auth/auth.php
@@ -102,6 +102,26 @@ class phpbb_auth
 		return;
 	}
 
+	/**
+	* Retrieves data wanted by acl function from the database for the
+	* specified user.
+	*
+	* @param int $user_id User ID
+	* @return array User attributes
+	*/
+	public function obtain_user_data($user_id)
+	{
+		global $db;
+
+		$sql = 'SELECT user_id, username, user_permissions, user_type
+			FROM ' . USERS_TABLE . '
+			WHERE user_id = ' . $user_id;
+		$result = $db->sql_query($sql);
+		$user_data = $db->sql_fetchrow($result);
+		$db->sql_freeresult($result);
+		return $user_data;
+	}
+
 	/**
 	* Fill ACL array with relevant bitstrings from user_permissions column
 	* @access private