diff --git a/gulpfile.js b/gulpfile.js
index c0ab02d..fec1b94 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -31,7 +31,7 @@ gulp.task('assets', ['bower'], function() {
 });
 
 gulp.task('clean', function(done) {
-  del(['./build'], done);
+  return del(['./build'], done);
 });
 
 gulp.task('watch', ['default'], function() {
@@ -40,4 +40,4 @@ gulp.task('watch', ['default'], function() {
 
 gulp.task('default', function(cb) {
   runSequence('clean', ['dgeni', 'assets'], cb);
-});
\ No newline at end of file
+});