diff --git a/src/os/os_test.go b/src/os/os_test.go
index baa2f07fd2b..545bc1c8b0d 100644
--- a/src/os/os_test.go
+++ b/src/os/os_test.go
@@ -1705,11 +1705,6 @@ func TestKillStartProcess(t *testing.T) {
 }
 
 func TestGetppid(t *testing.T) {
-	if runtime.GOOS == "plan9" {
-		// TODO: golang.org/issue/8206
-		t.Skipf("skipping test on plan9; see issue 8206")
-	}
-
 	testenv.MustHaveExec(t)
 
 	if Getenv("GO_WANT_HELPER_PROCESS") == "1" {