diff --git a/src/net/http/transport_test.go b/src/net/http/transport_test.go
index 2e27cc1850..bf2aa2f0b6 100644
--- a/src/net/http/transport_test.go
+++ b/src/net/http/transport_test.go
@@ -439,6 +439,9 @@ func TestTransportMaxPerHostIdleConns(t *testing.T) {
 }
 
 func TestTransportRemovesDeadIdleConnections(t *testing.T) {
+	if runtime.GOOS == "plan9" {
+		t.Skip("skipping test; see https://golang.org/issue/15464")
+	}
 	defer afterTest(t)
 	ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {
 		io.WriteString(w, r.RemoteAddr)