diff --git a/addons/product/product.py b/addons/product/product.py
index f37f3aefaa4..abe89abd4bf 100644
--- a/addons/product/product.py
+++ b/addons/product/product.py
@@ -327,7 +327,7 @@ class product_template(osv.osv):
         return True
 
     _constraints = [
-        (_check_uos, 'Error: UOS must be in a different category than the UOM', ['uos_id']),
+#        (_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']),
     ]