From 3a9c6503ee82eaf8f5ddb9b18b66fc538a48dee1 Mon Sep 17 00:00:00 2001
From: Henry Oswald <henry.oswald@sharelatex.com>
Date: Mon, 23 Feb 2015 17:46:17 +0000
Subject: [PATCH] null check mathjax

---
 services/web/public/coffee/ide/chat/directives/mathjax.coffee | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/services/web/public/coffee/ide/chat/directives/mathjax.coffee b/services/web/public/coffee/ide/chat/directives/mathjax.coffee
index 431244a30c..08e167ee66 100644
--- a/services/web/public/coffee/ide/chat/directives/mathjax.coffee
+++ b/services/web/public/coffee/ide/chat/directives/mathjax.coffee
@@ -15,12 +15,12 @@ define [
 			processEscapes: true
 		skipStartupTypeset: true
 
-	MathJax.Hub.Config(mathjaxConfig);
+	MathJax?.Hub?.Config(mathjaxConfig);
 	
 	App.directive "mathjax", () ->
 		return {
 			link: (scope, element, attrs) ->
 				setTimeout () ->
-					MathJax.Hub.Queue(["Typeset", MathJax.Hub, element.get(0)])
+					MathJax?.Hub?.Queue(["Typeset", MathJax?.Hub, element.get(0)])
 				, 0
 		}
\ No newline at end of file