diff --git a/lib/expressapp.js b/lib/expressapp.js
index dc2cb5a..acdfe8e 100644
--- a/lib/expressapp.js
+++ b/lib/expressapp.js
@@ -140,7 +140,8 @@ ExpressApp.prototype.start = function(opts, cb) {
     });
   });
 
-  router.put('/v1/copayers/', function(req, res) {
+  router.put('/v1/copayers/:id/', function(req, res) {
+    req.body.copayerId = req.params['id'];
     var server = getServer(req, res);
     server.addAccess(req.body, function(err, result) {
       if (err) return returnError(err, res, req);