From 2c648fe4d09dfeda6ae007f3725c3b4f44172bcc Mon Sep 17 00:00:00 2001
From: Sylvain Corlay <scorlay@bloomberg.net>
Date: Tue, 29 Jul 2014 20:11:34 +0000
Subject: [PATCH] bad call and missing call to unregister_comm

---
 IPython/html/static/services/kernels/js/comm.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/IPython/html/static/services/kernels/js/comm.js b/IPython/html/static/services/kernels/js/comm.js
index 4cb24a6fa..04307cf40 100644
--- a/IPython/html/static/services/kernels/js/comm.js
+++ b/IPython/html/static/services/kernels/js/comm.js
@@ -56,9 +56,9 @@ define([
         return comm.comm_id;
     };
     
-    CommManager.prototype.unregister_comm = function (comm_id) {
+    CommManager.prototype.unregister_comm = function (comm) {
         // Remove a comm from the mapping
-        delete this.comms[comm_id];
+        delete this.comms[comm.comm_id];
     };
     
     // comm message handlers
@@ -88,7 +88,7 @@ define([
         if (comm === undefined) {
             return;
         }
-        delete this.comms[content.comm_id];
+        this.unregister_comm(comm);
         try {
             comm.handle_close(msg);
         } catch (e) {