From fca14eeef33ff622fd751f8bb10203e77aa0c8d1 Mon Sep 17 00:00:00 2001
From: Lipu Fei <lipu.fei815@gmail.com>
Date: Tue, 24 Apr 2018 13:56:09 +0200
Subject: [PATCH] Fix optional arguments in MA _onChanged

---
 plugins/ModelChecker/ModelChecker.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/ModelChecker/ModelChecker.py b/plugins/ModelChecker/ModelChecker.py
index baa4a0d00b5..297844a0a30 100644
--- a/plugins/ModelChecker/ModelChecker.py
+++ b/plugins/ModelChecker/ModelChecker.py
@@ -34,7 +34,7 @@ def __init__(self):
         Application.getInstance().globalContainerStackChanged.connect(self._onChanged)
 
     ##  Pass-through to allow UM.Signal to connect with a pyqtSignal.
-    def _onChanged(self, _):
+    def _onChanged(self, *args, **kwargs):
         self.onChanged.emit()
 
     ##  Called when plug-ins are initialized.