--- a/src/pyams_content/shared/common/zmi/workflow.py	Wed Sep 19 17:22:56 2018 +0200
+++ b/src/pyams_content/shared/common/zmi/workflow.py	Thu Sep 20 10:48:36 2018 +0200
@@ -715,6 +715,8 @@
 
     buttons = button.Buttons(ISharedContentDeleteButtons)
 
+    __target = None
+
     @property
     def fields(self):
         fields = super(SharedContentDeleteForm, self).fields