diff --git a/addons/project/project.py b/addons/project/project.py
index d0649290df6..139d007d3ab 100644
--- a/addons/project/project.py
+++ b/addons/project/project.py
@@ -66,7 +66,7 @@ class project(osv.osv):
         # create aliases for all projects and avoid constraint errors
         alias_context = dict(context, alias_model_name='project.task')
         self.pool.get('mail.alias').migrate_to_alias(cr, self._name, self._table, super(project, self)._auto_init,
-            self._columns['alias_id'], 'id', alias_prefix='project+', alias_defaults={'project_id':'id'}, context=alias_context)
+            'project.task', self._columns['alias_id'], 'id', alias_prefix='project+', alias_defaults={'project_id':'id'}, context=alias_context)
 
     def search(self, cr, user, args, offset=0, limit=None, order=None, context=None, count=False):
         if user == 1: