diff -r b15153f45957 -r 5dd1aa8bedd9 src/pyams_content/shared/blog/zmi/manager.py
--- a/src/pyams_content/shared/blog/zmi/manager.py	Wed Apr 11 16:44:46 2018 +0200
+++ b/src/pyams_content/shared/blog/zmi/manager.py	Wed Apr 11 16:46:31 2018 +0200
@@ -171,6 +171,8 @@
 class BlogManagerWorkflowPublicationEditForm(AdminDialogEditForm):
     """Blog manager workflow publication edit form"""
 
+    prefix = 'blog_publication.'
+
     legend = _("Update publication dates")
 
     fields = field.Fields(IWorkflowPublicationInfo).select('publication_effective_date', 'publication_expiration_date')