diff --git a/product/ERP5CPS/SynchronizationToolPatch.py b/product/ERP5CPS/SynchronizationToolPatch.py
index 03b7d3a0f835a4c0c56863b37c2047ee7f40031a..2ce270a96e1892274daf108d0a0cec2e212fd778 100755
--- a/product/ERP5CPS/SynchronizationToolPatch.py
+++ b/product/ERP5CPS/SynchronizationToolPatch.py
@@ -29,7 +29,7 @@ def editDocument(self, object=None, **kw):
   for o in portal_trees.objectValues():
     try:
       o.rebuild()
-    except AttributeError,KeyError:
+    except (AttributeError,KeyError):
       pass