diff --git a/notebook/static/base/js/namespace.js b/notebook/static/base/js/namespace.js
index 43479f2ab..e0445cd0c 100644
--- a/notebook/static/base/js/namespace.js
+++ b/notebook/static/base/js/namespace.js
@@ -59,6 +59,7 @@ define(function(){
     jglobal('OutputArea','notebook/js/outputarea');
     jglobal('KeyboardManager','notebook/js/keyboardmanager');
     jglobal('Completer','notebook/js/completer');
+    jglobal('Notebook','notebook/js/notebook');
 
     Jupyter.version = "4.0.0.dev";
     Jupyter._target = '_blank';
diff --git a/notebook/static/notebook/js/notebook.js b/notebook/static/notebook/js/notebook.js
index 93a112315..87901ed25 100644
--- a/notebook/static/notebook/js/notebook.js
+++ b/notebook/static/notebook/js/notebook.js
@@ -1140,7 +1140,7 @@ define(function (require) {
             keyboard_manager: this.keyboard_manager,
             title : "Use markdown headings",
             body : $("<p/>").text(
-                'IPython no longer uses special heading cells. ' + 
+                'Jupyter no longer uses special heading cells. ' + 
                 'Instead, write your headings in Markdown cells using # characters:'
             ).append($('<pre/>').text(
                 '## This is a level 2 heading'
@@ -1618,7 +1618,7 @@ define(function (require) {
     };
     
     /**
-     * Prompt the user to restart the IPython kernel.
+     * Prompt the user to restart the Jupyter kernel.
      */
     Notebook.prototype.restart_kernel = function () {
         var that = this;
@@ -2032,7 +2032,7 @@ define(function (require) {
      */
     Notebook.prototype.trust_notebook = function () {
         var body = $("<div>").append($("<p>")
-            .text("A trusted IPython notebook may execute hidden malicious code ")
+            .text("A trusted Jupyter notebook may execute hidden malicious code ")
             .append($("<strong>")
                 .append(
                     $("<em>").text("when you open it")
@@ -2042,7 +2042,7 @@ define(function (require) {
             ).append(
                 " For more information, see the "
             ).append($("<a>").attr("href", "http://ipython.org/ipython-doc/2/notebook/security.html")
-                .text("IPython security documentation")
+                .text("Jupyter security documentation")
             ).append(".")
         );
 
@@ -2509,9 +2509,5 @@ define(function (require) {
         this.load_notebook(this.notebook_path);
     };
 
-
-    // For backwards compatability.
-    IPython.Notebook = Notebook;
-
     return {'Notebook': Notebook};
 });