diff --git a/IPython/html/static/terminal/js/terminado.js b/IPython/html/static/terminal/js/terminado.js
index 72dda7d..a5552ff 100644
--- a/IPython/html/static/terminal/js/terminado.js
+++ b/IPython/html/static/terminal/js/terminado.js
@@ -2,6 +2,7 @@ define ([], function() {
     "use strict";
     function make_terminal(element, size, ws_url) {
         var ws = new WebSocket(ws_url);
+        Terminal.brokenBold = true;
         var term = new Terminal({
           cols: size.cols,
           rows: size.rows,