diff --git a/src/cmd/compile/internal/gc/reflect.go b/src/cmd/compile/internal/gc/reflect.go
index a56edad3b4..9d9b43152e 100644
--- a/src/cmd/compile/internal/gc/reflect.go
+++ b/src/cmd/compile/internal/gc/reflect.go
@@ -157,7 +157,7 @@ func mapbucket(t *types.Type) *types.Type {
 	// the type of the overflow field to uintptr in this case.
 	// See comment on hmap.overflow in ../../../../runtime/hashmap.go.
 	otyp := types.NewPtr(bucket)
-	if !types.Haspointers(t.Val()) && !types.Haspointers(t.Key()) && t.Val().Width <= MAXVALSIZE && t.Key().Width <= MAXKEYSIZE {
+	if !types.Haspointers(valtype) && !types.Haspointers(keytype) {
 		otyp = types.Types[TUINTPTR]
 	}
 	overflow := makefield("overflow", otyp)