diff --git a/gui/mainFrame.py b/gui/mainFrame.py
index 979c7c9a7..bed52d091 100644
--- a/gui/mainFrame.py
+++ b/gui/mainFrame.py
@@ -38,7 +38,7 @@ class MainFrame(wx.Frame):
         MainFrame.__instance = self
 
         self.SetMinSize((1000, 700))
-        self.setSize((1000, 700))
+        self.SetSize((1000, 700))
 
         #Register menubar events / only quit for now
         self.Bind(wx.EVT_MENU, self.ExitApp, id=wx.ID_EXIT)