diff --git a/lms/static/coffee/src/customwmd.coffee b/lms/static/coffee/src/customwmd.coffee
index 524fdf32cb..0590a0679b 100644
--- a/lms/static/coffee/src/customwmd.coffee
+++ b/lms/static/coffee/src/customwmd.coffee
@@ -2,6 +2,9 @@
 
 $ ->
 
+  if not MathJax?
+    return
+
   HUB = MathJax.Hub
 
   class MathJaxProcessor