diff --git a/addons/product/pricelist.py b/addons/product/pricelist.py
index 3c1d5febc75..e98086d49e2 100644
--- a/addons/product/pricelist.py
+++ b/addons/product/pricelist.py
@@ -423,9 +423,6 @@ class product_pricelist_item(osv.osv):
             readonly=True, relation='res.company', string='Company', store=True)
     }
 
-    _sql_constraints = [
-        ('check_margin', 'CHECK (price_min_margin <= price_max_margin)', 'Minimum Margin must be lower than Maximum Margin !'),
-    ]
     _constraints = [
         (_check_recursion, 'Error ! You cannot assign the Main Pricelist as Other Pricelist in PriceList Item!', ['base_pricelist_id'])
     ]