diff --git a/src/pkg/runtime/gc_test.go b/src/pkg/runtime/gc_test.go
index 383af5be3dd..816fc89b047 100644
--- a/src/pkg/runtime/gc_test.go
+++ b/src/pkg/runtime/gc_test.go
@@ -165,7 +165,8 @@ func TestGcLastTime(t *testing.T) {
 		t.Fatalf("bad last GC time: got %v, want [%v, %v]", last, t0, t1)
 	}
 	pause := ms.PauseNs[(ms.NumGC+255)%256]
-	if pause == 0 || pause > 10e9 {
+	// Due to timer granularity pause can actually be 0 on windows.
+	if (pause == 0 && runtime.GOOS != "windows") || pause > 10e9 {
 		t.Fatalf("bad last GC pause: got %v, want [0, 10e9]", pause)
 	}
 }