diff --git a/docs/intro.md b/docs/intro.md
index ca24edc..f0d91e8 100644
--- a/docs/intro.md
+++ b/docs/intro.md
@@ -223,7 +223,7 @@ $ browserify script.js -t babelify --outfile bundle.js
     ]
   }
 }
-``
+```
 
 ## Traceur转码器