diff --git a/src/backend/access/table/toast_helper.c b/src/backend/access/table/toast_helper.c
index fb36151ce5..e916c0f95c 100644
--- a/src/backend/access/table/toast_helper.c
+++ b/src/backend/access/table/toast_helper.c
@@ -183,7 +183,7 @@ toast_tuple_find_biggest_attribute(ToastTupleContext *ttc,
 	TupleDesc	tupleDesc = ttc->ttc_rel->rd_att;
 	int			numAttrs = tupleDesc->natts;
 	int			biggest_attno = -1;
-	int32		biggest_size = MAXALIGN(TOAST_POINTER_SIZE);
+	int32		biggest_size = TOAST_POINTER_SIZE;
 	int32		skip_colflags = TOASTCOL_IGNORE;
 	int			i;