diff --git a/common/static/coffee/src/discussion/views/discussion_thread_show_view.coffee b/common/static/coffee/src/discussion/views/discussion_thread_show_view.coffee
index a8e95c2565..6320c3d1e3 100644
--- a/common/static/coffee/src/discussion/views/discussion_thread_show_view.coffee
+++ b/common/static/coffee/src/discussion/views/discussion_thread_show_view.coffee
@@ -47,7 +47,7 @@ if Backbone?
 
     convertMath: ->
       element = @$(".post-body")
-      element.html DiscussionUtil.postMathJaxProcessor DiscussionUtil.markdownWithHighlight element.html()
+      element.html DiscussionUtil.postMathJaxProcessor DiscussionUtil.markdownWithHighlight element.text()
       MathJax.Hub.Queue ["Typeset", MathJax.Hub, element[0]]
 
     toggleVote: (event) ->