diff --git a/vimscript.md b/vimscript.md
index e7cd905d0..9533e6a8f 100644
--- a/vimscript.md
+++ b/vimscript.md
@@ -83,7 +83,7 @@ tolower('Hello')
 toupper('Hello')
 ```
 
-Functions
+[Functions](http://learnvimscriptthehardway.stevelosh.com/chapters/23.html)
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 ```vim