diff --git a/odoo/service/model.py b/odoo/service/model.py
index e263a581be2..25f6dee3854 100644
--- a/odoo/service/model.py
+++ b/odoo/service/model.py
@@ -21,7 +21,7 @@ PG_CONCURRENCY_ERRORS_TO_RETRY = (errorcodes.LOCK_NOT_AVAILABLE, errorcodes.SERI
 MAX_TRIES_ON_CONCURRENCY_FAILURE = 5
 
 def dispatch(method, params):
-    (db, uid, passwd ) = params[0:3]
+    (db, uid, passwd ) = params[0], int(params[1]), params[2]
 
     # set uid tracker - cleaned up at the WSGI
     # dispatching phase in odoo.service.wsgi_server.application