diff --git a/readme.md b/readme.md
index fb3b9ba..98a662b 100644
--- a/readme.md
+++ b/readme.md
@@ -4,4 +4,4 @@
 
 `grunt browserify`
 
-read the output file. Line 4 should look like this `var __extends = undefined.__extends`
+read the `output.js` file. Line 4 should look like this `var __extends = undefined.__extends`