diff --git a/lib/Xmobar/Plugins/VPN.hs b/lib/Xmobar/Plugins/VPN.hs
index fa054fa..dfd4905 100644
--- a/lib/Xmobar/Plugins/VPN.hs
+++ b/lib/Xmobar/Plugins/VPN.hs
@@ -34,7 +34,7 @@ instance Exec VPN where
   start (VPN (text, colors)) cb =
     withDBusClientConnection cb "VPN" $ \c -> do
       let dpy = displayMaybe cb iconFormatter . Just =<< readState
-      s <- newMVar S.empty
+      s <- newEmptyMVar
       mapRIO (VEnv c s dpy) $ do
         initState
         vpnAddedListener addedCallback