diff --git a/screen.py b/screen.py
index 70180458..365e2df4 100755
--- a/screen.py
+++ b/screen.py
@@ -107,6 +107,8 @@ class KlipperScreen(Gtk.Window):
 
         self.connect("key-press-event", self._key_press_event)
         monitor = Gdk.Display.get_default().get_primary_monitor()
+        if monitor is None:
+            monitor = Gdk.Display.get_default().get_monitor(0)
         if monitor is None:
             raise RuntimeError("Couldn't get default monitor")
         self.width = self._config.get_main_config().getint("width", monitor.get_geometry().width)