diff --git a/filenotify/poller_test.go b/filenotify/poller_test.go
index 1ad72e9..506fc48 100644
--- a/filenotify/poller_test.go
+++ b/filenotify/poller_test.go
@@ -64,14 +64,15 @@ func TestPollerEvent(t *testing.T) {
 	default:
 	}
 
-	if err := ioutil.WriteFile(f.Name(), []byte("hello"), 0644); err != nil {
+	if err := ioutil.WriteFile(f.Name(), []byte("hello"), 0600); err != nil {
+		// consider umask
 		t.Fatal(err)
 	}
 	if err := assertEvent(w, fsnotify.Write); err != nil {
 		t.Fatal(err)
 	}
 
-	if err := os.Chmod(f.Name(), 600); err != nil {
+	if err := os.Chmod(f.Name(), 0644); err != nil {
 		t.Fatal(err)
 	}
 	if err := assertEvent(w, fsnotify.Chmod); err != nil {
diff --git a/refresh/watcher.go b/refresh/watcher.go
index 7c20ea5..14e4293 100644
--- a/refresh/watcher.go
+++ b/refresh/watcher.go
@@ -39,7 +39,7 @@ func (w *Watcher) Start() {
 			err := filepath.Walk(w.AppRoot, func(path string, info os.FileInfo, err error) error {
 				if info == nil {
 					w.cancelFunc()
-					return errors.New("nil directory!")
+					return errors.New("nil directory")
 				}
 				if info.IsDir() {
 					if strings.HasPrefix(filepath.Base(path), "_") {