Tested generator and gulp build
diff --git a/views/ngXosLib/generator-xos/app/templates/gulp/build.js b/views/ngXosLib/generator-xos/app/templates/gulp/build.js
index b2b1ade..b66cdbc 100644
--- a/views/ngXosLib/generator-xos/app/templates/gulp/build.js
+++ b/views/ngXosLib/generator-xos/app/templates/gulp/build.js
@@ -150,6 +150,7 @@
   gulp.task('build', function() {
     runSequence(
       'clean',
+      'sass',
       'templates',
       'babel',
       'scripts',