diff --git a/purchase.py b/purchase.py
index 9b2befd56e..ddc320220f 100644
--- a/purchase.py
+++ b/purchase.py
@@ -67,6 +67,11 @@ class PurchaseLine(ModelSQL, ModelView):
             analytic_accounts_field, fields_names))
         return res
 
+    def default_get(self, fields, with_rec_name=True):
+        fields = [x for x in fields if not x.startswith('analytic_account_')]
+        return super(PurchaseLine, self).default_get(fields,
+            with_rec_name=with_rec_name)
+
     def read(self, ids, fields_names=None):
         selection_obj = Pool().get('analytic_account.account.selection')