diff --git a/src/calibre/gui2/tweak_book/boss.py b/src/calibre/gui2/tweak_book/boss.py
index 978f82b480..2ab6c9c8db 100644
--- a/src/calibre/gui2/tweak_book/boss.py
+++ b/src/calibre/gui2/tweak_book/boss.py
@@ -766,7 +766,8 @@ class Boss(QObject):
         :param to_container: A container object to compare the current container to. If None, the previously checkpointed container is used
         '''
         self.commit_all_editors_to_container()
-        d = self.create_diff_dialog()
+        k = {} if allow_revert else {'revert_msg': None}
+        d = self.create_diff_dialog(**k)
         d.revert_requested.connect(partial(self.revert_requested, self.global_undo.previous_container))
         other = to_container or self.global_undo.previous_container
         d.container_diff(other, self.global_undo.current_container,