diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 92e8de1..66012ac 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -670,6 +670,7 @@ UpdateIndexRelation(Oid indexoid,
  * concurrent: if true, do not lock the table against writers.	The index
  *		will be marked "invalid" and the caller must take additional steps
  *		to fix it up.
+ * is_internal: if true, post creation hook for new index
  *
  * Returns the OID of the created index.
  */