diff --git a/bin/addons/base/ir/ir_model.py b/bin/addons/base/ir/ir_model.py
index 29bd130a400..8b2c52a33a4 100644
--- a/bin/addons/base/ir/ir_model.py
+++ b/bin/addons/base/ir/ir_model.py
@@ -235,10 +235,12 @@ class ir_model_fields(osv.osv):
     def unlink(self, cr, user, ids, context=None):
         for field in self.browse(cr, user, ids, context):
             if field.state <> 'manual':
-                raise except_orm(_('Error'), _("You can not remove the field '%s' !") %(field.name,))
+                raise except_orm(_('Error'), _("You cannot remove the field '%s' !") %(field.name,))
         #
         # MAY BE ADD A ALTER TABLE DROP ?
         #
+            #Removing _columns entry for that table
+            self.pool.get(field.model)._columns.pop(field.name,None)
         return super(ir_model_fields, self).unlink(cr, user, ids, context)
 
     def create(self, cr, user, vals, context=None):