diff --git a/gulpfile.js b/gulpfile.js
index c846970124..1819a96f29 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -597,7 +597,6 @@ gulp.task('build/packages.dart', function(done) {
     '!build/pubget.angular2.dart',
     '!build/change_detect.dart',
     'build/pure-packages.dart',
-    'build/format.dart',
     sequenceComplete(done));
 });