diff --git a/discover_overlay/discover_overlay.py b/discover_overlay/discover_overlay.py
index 61ef774..1550982 100755
--- a/discover_overlay/discover_overlay.py
+++ b/discover_overlay/discover_overlay.py
@@ -61,7 +61,7 @@ class Discover:
 
             # Create System Tray
             self.tray = Gtk.StatusIcon.new_from_icon_name("discover_overlay")
-            self.tray.connect('popup-menu', show_menu)
+            self.tray.connect('popup-menu', self.show_menu)
 
     def make_menu(self):
         # Create System Menu