diff --git a/product/ERP5Form/Form.py b/product/ERP5Form/Form.py
index 46f2656a27088f36ff55a7596cb17f97ce8c21c1..fa0b3afa3a24bc7561485a13069f489760b912fe 100755
--- a/product/ERP5Form/Form.py
+++ b/product/ERP5Form/Form.py
@@ -89,6 +89,7 @@ class ERP5Field(Field):
             except:
               # We add this safety exception to make sure we always get
               # something reasonable rather than generate plenty of errors
+              LOG('ERP5Form.get_value, exception on tales_expr: ',0,'')
               value = self.get_orig_value(id)
         else:
             # FIXME: backwards compat hack to make sure overrides dict exists