diff --git a/gulpfile.js b/gulpfile.js
index 1476231c6c..817ca32830 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -808,7 +808,8 @@ function devGuideExamplesWatch(shredOptions, postShredAction) {
   // removed this version because gulp.watch has the same glob issue that dgeni has.
   // var excludePattern = '!' + path.join(shredOptions.examplesDir, '**/node_modules/**/*.*');
   // gulp.watch([includePattern, excludePattern], {readDelay: 500}, function (event, done) {
-  var files = globby.sync( [includePattern], { ignore: [ '**/node_modules/**', '**/_fragments/**']});
+  var files = globby.sync( [includePattern], { ignore: [ '**/node_modules/**', '**/_fragments/**',
+                                                         '**/dart/build/**' ]});
   gulp.watch([files], {readDelay: 500}, function (event, done) {
     gutil.log('Dev Guide example changed')
     gutil.log('Event type: ' + event.type); // added, changed, or deleted