diff --git a/IPython/html/static/style/style.min.css b/IPython/html/static/style/style.min.css
index ec11e46..8bd5a19 100644
--- a/IPython/html/static/style/style.min.css
+++ b/IPython/html/static/style/style.min.css
@@ -8794,6 +8794,23 @@ input.engine_num_input {
 .notebook_icon:before.pull-right {
   margin-left: .3em;
 }
+.running_notebook_icon:before {
+  display: inline-block;
+  font: normal normal normal 14px/1 FontAwesome;
+  font-size: inherit;
+  text-rendering: auto;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  transform: translate(0, 0);
+  content: "\f02d";
+  color: #5cb85c;
+}
+.running_notebook_icon:before.pull-left {
+  margin-right: .3em;
+}
+.running_notebook_icon:before.pull-right {
+  margin-left: .3em;
+}
 .file_icon:before {
   display: inline-block;
   font: normal normal normal 14px/1 FontAwesome;
diff --git a/IPython/html/static/tree/js/notebooklist.js b/IPython/html/static/tree/js/notebooklist.js
index 2b6e98b..467955f 100644
--- a/IPython/html/static/tree/js/notebooklist.js
+++ b/IPython/html/static/tree/js/notebooklist.js
@@ -382,11 +382,16 @@ define([
     NotebookList.prototype.add_link = function (model, item) {
         var path = model.path,
             name = model.name;
+        var running = (model.type == 'notebook' && this.sessions[path] !== undefined);
+        
         item.data('name', name);
         item.data('path', path);
         item.data('type', model.type);
         item.find(".item_name").text(name);
         var icon = NotebookList.icons[model.type];
+        if (running) {
+            icon = 'running_' + icon;
+        }
         var uri_prefix = NotebookList.uri_prefixes[model.type];
         item.find(".item_icon").addClass(icon).addClass('icon-fixed-width');
         var link = item.find("a.item_link")
@@ -398,7 +403,6 @@ define([
                 )
             );
 
-        var running = (model.type == 'notebook' && this.sessions[path] !== undefined);
         item.find(".item_buttons .running-indicator").css('visibility', running ? '' : 'hidden');
 
         // directory nav doesn't open new tabs
diff --git a/IPython/html/static/tree/less/tree.less b/IPython/html/static/tree/less/tree.less
index 4f808ed..3f0c9c3 100644
--- a/IPython/html/static/tree/less/tree.less
+++ b/IPython/html/static/tree/less/tree.less
@@ -164,6 +164,12 @@ input.engine_num_input {
     .icon(@fa-var-book)
 }
 
+.running_notebook_icon:before {
+    .icon(@fa-var-book);
+    color: @brand-success
+}
+
+
 .file_icon:before {
     .icon(@fa-var-file-o)
 }