diff --git management/univention-directory-listener/src/cache.c management/univention-directory-listener/src/cache.c
index bb617cc178..274864d164 100644
--- management/univention-directory-listener/src/cache.c
+++ management/univention-directory-listener/src/cache.c
@@ -493,6 +493,7 @@ inline int cache_update_entry(NotifierID id, char *dn, CacheEntry *entry) {
 	rv = mdb_cursor_open(write_txn, id2dn, &id2dn_write_cursor_p);
 	if (rv != MDB_SUCCESS) {
 		ERROR_MDB_ABORT(rv, "mdb_cursor_open");
+		mdb_txn_abort(write_txn);
 		return rv;
 	}
 
@@ -585,6 +586,7 @@ int cache_delete_entry(NotifierID id, char *dn) {
 	rv = mdb_cursor_open(write_txn, id2dn, &id2dn_write_cursor_p);
 	if (rv != MDB_SUCCESS) {
 		ERROR_MDB_ABORT(rv, "mdb_cursor_open");
+		mdb_txn_abort(write_txn);
 		return rv;
 	}