diff --git a/openerp/http.py b/openerp/http.py
index 7ce70795a82..8e82beac43e 100644
--- a/openerp/http.py
+++ b/openerp/http.py
@@ -208,7 +208,7 @@ class WebRequest(object):
             args = (request,) + args
         # Correct exception handling and concurency retry
         @service_model.check
-        def checked_call(dbname, *a, **kw):
+        def checked_call(___dbname, *a, **kw):
             return self.func(*a, **kw)
 
         # FIXME: code and rollback management could be cleaned
diff --git a/openerp/service/model.py b/openerp/service/model.py
index a2c2dff90c5..d65cbd77333 100644
--- a/openerp/service/model.py
+++ b/openerp/service/model.py
@@ -40,9 +40,10 @@ def dispatch(method, params):
 
 def check(f):
     @wraps(f)
-    def wrapper(dbname, *args, **kwargs):
+    def wrapper(___dbname, *args, **kwargs):
         """ Wraps around OSV functions and normalises a few exceptions
         """
+        dbname = ___dbname      # NOTE: this forbid to use "___dbname" as arguments in http routes
 
         def tr(src, ttype):
             # We try to do the same as the _(), but without the frame