diff -r e598d1acf354 -r 56b48961cc68 controls/DebugVariablePanel/DebugVariableViewer.py
--- a/controls/DebugVariablePanel/DebugVariableViewer.py	Fri Sep 22 20:12:22 2017 +0300
+++ b/controls/DebugVariablePanel/DebugVariableViewer.py	Thu Sep 28 12:20:40 2017 +0300
@@ -49,7 +49,7 @@
 # -------------------------------------------------------------------------------
 
 
-class DebugVariableViewer:
+class DebugVariableViewer(object):
     """
     Class that implements a generic viewer that display a list of variable values
     This class has to be inherited to effectively display variable values