--- a/RefactoringRope/RefactoringDialogBase.py	Sun Nov 04 18:42:03 2018 +0100
+++ b/RefactoringRope/RefactoringDialogBase.py	Sat Nov 10 17:40:03 2018 +0100
@@ -133,7 +133,7 @@
         @param evt reference to the close event object
         @type QCloseEvent
         """
-        self.__refactoring.sendJson("ClearChanges", {
+        self._refactoring.sendJson("ClearChanges", {
             "ChangeGroup": self._changeGroupName,
         })