diff --git a/internal/tun2/server_test.go b/internal/tun2/server_test.go
index 00a3464..406d517 100644
--- a/internal/tun2/server_test.go
+++ b/internal/tun2/server_test.go
@@ -174,21 +174,29 @@ func TestBackendRouting(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer l.Close()
 
 	go s.Listen(l, false)
 
 	cases := []struct {
-		name      string
-		should200 bool
-		handler   http.HandlerFunc
+		name           string
+		wantStatusCode int
+		handler        http.HandlerFunc
 	}{
 		{
-			name:      "200 everything's okay",
-			should200: true,
+			name:           "200 everything's okay",
+			wantStatusCode: http.StatusOK,
 			handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 				http.Error(w, "HTTP 200, everything is okay :)", http.StatusOK)
 			}),
 		},
+		{
+			name:           "500 internal error",
+			wantStatusCode: http.StatusInternalServerError,
+			handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				http.Error(w, "HTTP 500, the world is on fire", http.StatusInternalServerError)
+			}),
+		},
 	}
 
 	for _, cs := range cases {
@@ -213,7 +221,7 @@ func TestBackendRouting(t *testing.T) {
 
 			go c.Connect(ctx) // TODO: fix the client library so this ends up actually getting cleaned up
 
-			time.Sleep(time.Second)
+			time.Sleep(125 * time.Millisecond)
 
 			req, err := http.NewRequest("GET", "http://cetacean.club/", nil)
 			if err != nil {
@@ -225,9 +233,9 @@ func TestBackendRouting(t *testing.T) {
 				t.Fatalf("error in doing round trip: %v", err)
 			}
 
-			if cs.should200 && resp.StatusCode != http.StatusOK {
+			if cs.wantStatusCode != resp.StatusCode {
 				resp.Write(os.Stdout)
-				t.Fatalf("got status %d instead of StatusOK", resp.StatusCode)
+				t.Fatalf("got status %d instead of %d", resp.StatusCode, cs.wantStatusCode)
 			}
 		})
 	}
@@ -258,8 +266,6 @@ func setupTestServer() (*Server, *mockStorage, net.Listener, error) {
 }
 
 func BenchmarkHTTP200(b *testing.B) {
-	b.Skip("this benchmark doesn't work yet")
-
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()