diff --git a/apps/user_ldap/lib/Group_Proxy.php b/apps/user_ldap/lib/Group_Proxy.php
index 73daf4fdd7780..7410aa6a6e9d0 100644
--- a/apps/user_ldap/lib/Group_Proxy.php
+++ b/apps/user_ldap/lib/Group_Proxy.php
@@ -178,7 +178,7 @@ public function getUserGroups($uid) {
 			}
 		}
 
-		return $groups;
+		return array_values(array_unique($groups));
 	}
 
 	/**