diff --git a/app/ui.js b/app/ui.js
index a0190004..860f4080 100644
--- a/app/ui.js
+++ b/app/ui.js
@@ -1055,6 +1055,8 @@ var UI = {
 
         UI.updateVisualState('disconnecting');
 
+        UI.rfb = undefined;
+
         // Don't display the connection settings until we're actually disconnected
     },