diff --git a/src/chunk_index.c b/src/chunk_index.c
index 484219b8acf..1bcd2408887 100644
--- a/src/chunk_index.c
+++ b/src/chunk_index.c
@@ -598,7 +598,7 @@ chunk_lock_object_for_deletion(ObjectAddress *obj)
 	 * If we cannot find the object, it might have been concurrently deleted
 	 * (we do not have locks on objects yet).
 	 */
-	if (!relkind)
+	if (relkind == '\0')
 		return false;
 	if (relkind == RELKIND_INDEX)
 	{