diff --git a/src/os/executable_test.go b/src/os/executable_test.go
index 9ff6327149..719d6a61c3 100644
--- a/src/os/executable_test.go
+++ b/src/os/executable_test.go
@@ -90,8 +90,8 @@ func init() {
 func TestExecutableDeleted(t *testing.T) {
 	testenv.MustHaveExec(t)
 	switch runtime.GOOS {
-	case "windows":
-		t.Skip("windows does not support deleting running binary")
+	case "windows", "plan9":
+		t.Skipf("%v does not support deleting running binary", runtime.GOOS)
 	case "openbsd", "freebsd", "aix":
 		t.Skipf("%v does not support reading deleted binary name", runtime.GOOS)
 	}