diff --git a/addons/product/product.py b/addons/product/product.py
index 7f3a33ce3a2..d284a6242fb 100644
--- a/addons/product/product.py
+++ b/addons/product/product.py
@@ -1018,7 +1018,7 @@ class product_product(osv.osv):
             name = variant and "%s (%s)" % (product.name, variant) or product.name
             sellers = []
             if partner_ids:
-                partner_ids and filter(lambda x: x.name.id in partner_ids, product.seller_ids)
+                sellers = filter(lambda x: x.name.id in partner_ids, product.seller_ids)
             if sellers:
                 for s in sellers:
                     seller_variant = s.product_name and "%s (%s)" % (s.product_name, variant) or False