diff --git a/source/lib/ldb/common/ldb.c b/source/lib/ldb/common/ldb.c
index 743711b..c8aa6af 100644
--- a/source/lib/ldb/common/ldb.c
+++ b/source/lib/ldb/common/ldb.c
@@ -787,6 +787,7 @@ int ldb_search(struct ldb_context *ldb,
 done:
 	if (ret != LDB_SUCCESS) {
 		talloc_free(res);
+		res = NULL;
 	}
 
 	*_res = res;