fix undefined Req
diff --git a/src/couch_dbupdates_httpd.erl b/src/couch_dbupdates_httpd.erl
index ae001ae..09f1104 100644
--- a/src/couch_dbupdates_httpd.erl
+++ b/src/couch_dbupdates_httpd.erl
@@ -39,7 +39,7 @@
     couch_dbupdates:handle_dbupdates(fun handle_update/2,
                                      State, Options);
 
-handle_req(_Req) ->
+handle_req(Req) ->
     couch_httpd:send_method_not_allowed(Req, "GET").
 
 handle_update(stop, #state{resp=Resp}) ->