diff --git a/lib/router.js b/lib/router.js
index d8f8e30..9369d9c 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -791,7 +791,7 @@
             });
             return res.end(new Buffer(unescape(escaped_pixel_gif), 'binary'));
           } else {
-            return dispatch._404(null, res, pathname);
+            return dispatch._404(req, res, pathname);
           }
         }
       });
diff --git a/src/router.coffee b/src/router.coffee
index a8b7d14..1e87bd2 100644
--- a/src/router.coffee
+++ b/src/router.coffee
@@ -647,7 +647,7 @@ Router = (options = {}) ->
           res.writeHead 200, {'Content-Type': mime_types[path_tools.extname('pixel.gif')] or 'image/gif'}
           return res.end new Buffer(unescape(escaped_pixel_gif), 'binary')
         else
-          dispatch._404 null, res, pathname
+          dispatch._404 req, res, pathname
 
 # CGI support (improved on 2012-09-07, further fixes on 2013-08-03)