diff --git a/lib/server/parse-http.js b/lib/server/parse-http.js
index c5cd9d8..cb3e481 100644
--- a/lib/server/parse-http.js
+++ b/lib/server/parse-http.js
@@ -49,7 +49,7 @@ function parseHttpRequest (req, opts) {
       })
     }
   } else {
-    throw new Error('invalid action in HTTP request: ' + params.action)
+    throw new Error('invalid action in HTTP request: ' + req.url)
   }
 
   return params