diff --git a/src/gulpfile.js b/src/gulpfile.js
index b895431d..0573b363 100644
--- a/src/gulpfile.js
+++ b/src/gulpfile.js
@@ -24,7 +24,7 @@ gulp.task('build', [
 
 // Watch task
 gulp.task('watch', function(){
-    gulp.watch('js/*.js', ['js']);
+    gulp.watch('js/**/*.js', ['js']);
     gulp.watch('css/*.less', ['css']);
 });