diff --git a/configuration.py b/configuration.py
index 5708df5..b4048b6 100644
--- a/configuration.py
+++ b/configuration.py
@@ -34,7 +34,7 @@ class Configuration(metaclass=PoolMeta):
     product_category = fields.Many2Many(
         string='Categories', origin='config', target='category',
         help='Categories used to determine tax and accounts for a product ' +
-        'on an invoice line.',
+        'on an invoice line.', filter=[('accounting', '=', True)],
         relation_name='document.incoming.confprodcat_rel')
 
     @classmethod