diff --git a/lib/private/group.php b/lib/private/group.php
index bd9e3d37d1..8dc3812920 100644
--- a/lib/private/group.php
+++ b/lib/private/group.php
@@ -187,7 +187,12 @@ class OC_Group {
 	public static function getUserGroups($uid) {
 		$user = self::$userManager->get($uid);
 		if ($user) {
-			return self::getManager()->getUserGroupIds($user);
+			$groups = self::getManager()->getUserGroups($user);
+			$groupIds = array();
+			foreach ($groups as $group) {
+				$groupIds[] = $group->getGID();
+			}
+			return $groupIds;
 		} else {
 			return array();
 		}
diff --git a/lib/private/group/manager.php b/lib/private/group/manager.php
index 3613c7547b..dae6443e9d 100644
--- a/lib/private/group/manager.php
+++ b/lib/private/group/manager.php
@@ -182,18 +182,6 @@ class Manager extends PublicEmitter {
 		$this->cachedUserGroups[$uid] = array_values($groups);
 		return $this->cachedUserGroups[$uid];
 	}
-	/**
-	 * @param \OC\User\User $user
-	 * @return array with group names
-	 */
-	public function getUserGroupIds($user) {
-		$groupIds = array();
-		foreach ($this->backends as $backend) {
-			$groupIds = array_merge($groupIds, $backend->getUserGroups($user->getUID()));
-			
-		}
-		return $groupIds;
-	}
 
 	/**
 	 * get a list of all display names in a group