2 files changed, 4 insertions, 2 deletions
diff --git a/src/runtime/export_test.go b/src/runtime/export_test.go
index 87df7c99e4..016938ed4e 100644
--- a/src/runtime/export_test.go
+++ b/src/runtime/export_test.go
@@ -117,3 +117,5 @@ func GostringW(w []uint16) (s string) {
 
 var Gostringnocopy = gostringnocopy
 var Maxstring = &maxstring
+
+type Uintreg uintreg
diff --git a/src/runtime/runtime_test.go b/src/runtime/runtime_test.go
index c4de3e247b..229d7e27ee 100644
--- a/src/runtime/runtime_test.go
+++ b/src/runtime/runtime_test.go
@@ -261,8 +261,8 @@ func TestTrailingZero(t *testing.T) {
 		n int64
 		z struct{}
 	}
-	if unsafe.Sizeof(T2{}) != 16 {
-		t.Errorf("sizeof(%#v)==%d, want 16", T2{}, unsafe.Sizeof(T2{}))
+	if unsafe.Sizeof(T2{}) != 8 + unsafe.Sizeof(Uintreg(0)) {
+		t.Errorf("sizeof(%#v)==%d, want %d", T2{}, unsafe.Sizeof(T2{}), 8 + unsafe.Sizeof(Uintreg(0)))
 	}
 	type T3 struct {
 		n byte