From cbb77e02241053b50b56189398a720c97d3390b7 Mon Sep 17 00:00:00 2001
From: Gaetan Delannay <gaetan.delannay@gmail.com>
Date: Tue, 9 Mar 2010 15:22:33 +0100
Subject: [PATCH] Bugfix while optimizing back references.

---
 gen/plone25/mixins/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gen/plone25/mixins/__init__.py b/gen/plone25/mixins/__init__.py
index 3925ab6..61aa80c 100644
--- a/gen/plone25/mixins/__init__.py
+++ b/gen/plone25/mixins/__init__.py
@@ -952,7 +952,7 @@ class AbstractMixin:
             res = None
             if objs:
                 res = objs[0]
-            if not ploneObjects:
+            if res and not ploneObjects:
                 res = res.appy()
         else:
             res = objs