From 2ef7829fb7ee48238d153aaba90952e8a4c31622 Mon Sep 17 00:00:00 2001
From: Will Daly <will@edx.org>
Date: Thu, 4 Dec 2014 08:46:32 -0500
Subject: [PATCH] Fix issue with iframe redirect

---
 lms/templates/courseware/mktg_course_about.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lms/templates/courseware/mktg_course_about.html b/lms/templates/courseware/mktg_course_about.html
index 0c104a017b..e1f71a2af2 100644
--- a/lms/templates/courseware/mktg_course_about.html
+++ b/lms/templates/courseware/mktg_course_about.html
@@ -22,7 +22,9 @@
 
       var email_opt_in = $("input[name='email_opt_in']").val(),
         current_href = $("a.register").attr("href");
-      $("a.register").attr("href", current_href + "&email_opt_in=" + email_opt_in)
+      if (current_href) {
+        $("a.register").attr("href", current_href + "&email_opt_in=" + email_opt_in)
+      }
 
       $("#class_enroll_form").submit();
       event.preventDefault();