diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c
index 4e9e0aad78..e24256979d 100644
--- a/src/backend/utils/cache/lsyscache.c
+++ b/src/backend/utils/cache/lsyscache.c
@@ -824,7 +824,7 @@ get_attnum(Oid relid, const char *attname)
 /*
  * get_attgenerated
  *
- *		Given the relation id and the attribute name,
+ *		Given the relation id and the attribute number,
  *		return the "attgenerated" field from the attribute relation.
  *
  *		Errors if not found.