diff --git a/product/ERP5Form/ListBox.py b/product/ERP5Form/ListBox.py
index d056976212b3c186f1984ed56c4fe1cbc5f33cc3..a047c49de64504dd44a0a679d1251ac9ddbbc2cf 100644
--- a/product/ERP5Form/ListBox.py
+++ b/product/ERP5Form/ListBox.py
@@ -3028,7 +3028,8 @@ class ListBox(ZMIField):
        XXX - Is this method really necessary - I am not sure - JPS
        Why not use Formulator API instead ? -> the answer is that it is a
          MethodField, and it's method_name attribute is not available from
-         restricted environment.
+         restricted environment. It is only used in
+         ERP5Site_checkNamingConventions
 
       XXX also this method is not compatible with ProxyFields.
       It will go away soon.