diff --git a/openerp/http.py b/openerp/http.py
index 22a9ce5ccf3..fb569330c64 100644
--- a/openerp/http.py
+++ b/openerp/http.py
@@ -1135,6 +1135,8 @@ class OpenERPSession(werkzeug.contrib.sessions.Session):
         request.uid = uid
         request.disable_db = False
 
+        del request.env
+
         if uid: self.get_context()
         return uid