diff --git a/addons/product/product.py b/addons/product/product.py
index afd42dfe929..7277c736f97 100644
--- a/addons/product/product.py
+++ b/addons/product/product.py
@@ -317,10 +317,10 @@ class product_template(osv.osv):
         md = self.pool.get('ir.model.data')
         res = False
         try:
-            res = md.get_object_reference(cr, uid, 'product', 'cat0')
+            res = md.get_object_reference(cr, uid, 'product', 'cat0')[1]
         except ValueError:
             res = False
-        return res and res[1] or False
+        return res
 
     def onchange_uom(self, cursor, user, ids, uom_id,uom_po_id):
         if uom_id: