diff --git a/lib/public/apachebackend.php b/lib/public/apachebackend.php
index 47ee8b4ed3bfe438c26575b49493607876ca9e47..6085714a6e919745c47f9f6c6d13b8a9b9d3dc05 100644
--- a/lib/public/apachebackend.php
+++ b/lib/public/apachebackend.php
@@ -26,7 +26,9 @@ namespace OCP;
 interface ApacheBackend {
 
 	/**
-	 * @return Returns whether Apache reports a user is currently logged in.
+	 * In case the user has been authorized by Apache true is returned.
+	 *
+	 * @return boolean whether Apache reports a user is currently logged in.
 	 */
 	public function isSessionActive();