diff --git a/bin/addons/base/ir/ir_model.py b/bin/addons/base/ir/ir_model.py
index c52635e3424..888432e7968 100644
--- a/bin/addons/base/ir/ir_model.py
+++ b/bin/addons/base/ir/ir_model.py
@@ -82,6 +82,8 @@ class ir_model(osv.osv):
         return super(ir_model,self).write(cr, user, ids, vals, context)
 
     def create(self, cr, user, vals, context=None):
+        if  context is None:
+            context = {}
         if context and context.get('manual',False):
             vals['state']='manual'
         res = super(ir_model,self).create(cr, user, vals, context)