diff --git a/lib/sinatra/base.rb b/lib/sinatra/base.rb
index dc538a634a..4fc43e8790 100644
--- a/lib/sinatra/base.rb
+++ b/lib/sinatra/base.rb
@@ -1050,7 +1050,7 @@ def route_missing
       if @app
         forward
       else
-        raise NotFound
+        raise NotFound, "#{request.request_method} #{request.path_info}"
       end
     end