diff --git a/src/Hook/UserLoggedIn/SyncUserGroups.php b/src/Hook/UserLoggedIn/SyncUserGroups.php
index dd52c11..eb6a477 100644
--- a/src/Hook/UserLoggedIn/SyncUserGroups.php
+++ b/src/Hook/UserLoggedIn/SyncUserGroups.php
@@ -98,7 +98,7 @@ function( $dn ) use ($mapping) {
 				if ( isset( $mapping[$dn] ) ) {
 					return $mapping[$dn];
 				}
-			}, $groupList->getFullDNs()
+			}, $groupList["memberof"]
 		);
 	}