diff --git a/Chapter01/MyFirstBetterLookingApp.py b/Chapter01/MyFirstBetterLookingApp.py
index 367db26..88898b1 100644
--- a/Chapter01/MyFirstBetterLookingApp.py
+++ b/Chapter01/MyFirstBetterLookingApp.py
@@ -17,7 +17,7 @@ class MyFrame(wx.Frame):
     # subclass of wx.Window; Frame is a top level window
     # A frame is a window whose size and position can (usually) be changed by the user.
     # Usually represents the first/main window a user will see
-    def __init__(self, parent, title, pos=pos):
+    def __init__(self, parent, title, pos):
         super().__init__(parent=parent, title=title, pos=pos)
     
     def OnInit(self):