diff --git a/js/panel_controller.js b/js/panel_controller.js
index 0ad499a5..657f9c22 100644
--- a/js/panel_controller.js
+++ b/js/panel_controller.js
@@ -72,7 +72,6 @@
             conversation.fetchMessages();
         } else {
             openConversation(conversationId);
-            var windowId = windowMap.windowIdFrom(conversationId);
             extension.windows.drawAttention(windowId);
         }
     };