diff --git a/pygobject/XApp.py b/pygobject/XApp.py
index c56ef49..80eb278 100644
--- a/pygobject/XApp.py
+++ b/pygobject/XApp.py
@@ -1,14 +1,25 @@
 from gi.overrides import override
 from gi.importer import modules
+
+"""
+The only purpose of this file is to ensure the XApp widget GType is registered
+at the time of import.  Otherwise any user of XApp.GtkWindow would have to create
+a dummy widget prior to using a GtkBuilder to parse a ui file containing an
+XAppGtkWindow.
+
+The gi import machinery sweeps usr/lib/python*/dist-packages/gi/overrides for file
+matching the module name at the time of execution.
+
+This file needs to be in both python2 and python3 overrides locations.
+
+"""
 
 XApp = modules['XApp']._introspection_module
 
 __all__ = []
 
 class GtkWindow(XApp.GtkWindow):
-
-    def __init__(self, *args, **kwargs):
-        XApp.GtkWindow.__init__(self, *args, **kwargs)
+    pass
 
 GtkWindow = override(GtkWindow)
 __all__.append('GtkWindow')