diff --git a/product/ERP5/ERP5Site.py b/product/ERP5/ERP5Site.py
index 3c54eeab6fa736b80c50e55c1e2f8d89a98d02a0..32960f0b419dba9612a598a754a1b16f2362a2f4 100644
--- a/product/ERP5/ERP5Site.py
+++ b/product/ERP5/ERP5Site.py
@@ -448,7 +448,8 @@ class ERP5Site(FolderMixIn, CMFSite, CacheCookieMixin):
                             'setVersionPriority' )
   def setVersionPriority(self, value):
     """
-    XXX-arnau: really hackish...
+    XXX-arnau: must be written through an interaction workflow when ERP5Site
+               will become a real ERP5 object...
     """
     self._version_priority = value