diff --git a/gulpfile.js b/gulpfile.js
index <HASH>..<HASH> 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -220,7 +220,7 @@ var CONFIG = {
     },
     dart: {
       src: ['LICENSE'],
-      exclude: ['rtts_assert/'],
+      exclude: ['rtts_assert'],
       pipes: {}
     }
   },
fix(build): Don't include rtts in the dart build.

The module name actually does not include a trailing slash, so the
folder would show up and be included in the dart pubbuild.