--- a/controls/DebugVariablePanel/DebugVariableTextViewer.py	Mon Oct 09 12:30:14 2017 +0300
+++ b/controls/DebugVariablePanel/DebugVariableTextViewer.py	Mon Oct 09 16:04:39 2017 +0300
@@ -148,7 +148,7 @@
     Class that implements a Viewer that display variable values as a text
     """
 
-    def __init__(self, parent, window, items=[]):
+    def __init__(self, parent, window, items=None):
         """
         Constructor
         @param parent: Parent wx.Window of DebugVariableText