diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 6cffe550b3..c99aef04a2 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -1588,7 +1588,7 @@ RemoveAttributeById(Oid relid, AttrNumber attnum)
 	/*
 	 * Grab an exclusive lock on the target table, which we will NOT release
 	 * until end of transaction.  (In the simple case where we are directly
-	 * dropping this column, AlterTableDropColumn already did this ... but
+	 * dropping this column, ATExecDropColumn already did this ... but
 	 * when cascading from a drop of some other object, we may not have any
 	 * lock.)
 	 */