diff --git a/docs/writing.md b/docs/writing.md
index 42eb655fd..ffe3f6194 100644
--- a/docs/writing.md
+++ b/docs/writing.md
@@ -31,7 +31,7 @@ To read in the function body, just read from STDIN.
 
 You will also have access to a set of environment variables.
 
-* REQUEST_URL - the full URL for the request [example here](https://github.com/fnproject/fn/tree/master/examples/tutorial/params)
+* REQUEST_URL - the full URL for the request ([example here](https://github.com/fnproject/fn/tree/master/examples/tutorial/params))
 * APP_NAME - the name of the application that matched this route, eg: `myapp`
 * ROUTE - the matched route, eg: `/hello`
 * METHOD - the HTTP method for the request, eg: `GET` or `POST`