diff --git a/addons/product/product.py b/addons/product/product.py
index f1867e8bb47..10c3e979bd7 100644
--- a/addons/product/product.py
+++ b/addons/product/product.py
@@ -327,6 +327,7 @@ class product_template(osv.osv):
         return True
 
     _constraints = [
+        # As Per do changes given by lp bug : 543979
 #        (_check_uos, 'Error: UOS must be in a different category than the UOM', ['uos_id']),
         (_check_uom, 'Error: The default UOM and the purchase UOM must be in the same category.', ['uom_id']),
     ]