--- a/src/pyams_content/shared/common/zmi/workflow.py	Fri Nov 10 12:07:43 2017 +0100
+++ b/src/pyams_content/shared/common/zmi/workflow.py	Tue Nov 14 14:05:30 2017 +0100
@@ -18,7 +18,7 @@
 
 # import interfaces
 from pyams_content.interfaces import PUBLISH_CONTENT_PERMISSION, CREATE_CONTENT_PERMISSION, MANAGE_CONTENT_PERMISSION
-from pyams_content.shared.common.interfaces import IWfSharedContent, ISharedTool, ISharedContent
+from pyams_content.shared.common.interfaces import IWfSharedContent, IBaseSharedTool, ISharedContent
 from pyams_form.interfaces.form import IWidgetsPrefixViewletsManager, IFormSuffixViewletsManager
 from pyams_security.interfaces import ISecurityManager
 from pyams_skin.layer import IPyAMSLayer
@@ -762,7 +762,7 @@
         state = IWorkflowState(self.context)
         if state.version_id == 1:  # remove the first and only version => remove all
             content = get_parent(self.context, ISharedContent)
-            self.__target = get_parent(content, ISharedTool)
+            self.__target = get_parent(content, IBaseSharedTool)
             del content.__parent__[content.__name__]
         else:
             versions = IWorkflowVersions(self.context)