--- a/browser/base/content/aboutNetError.xhtml
+++ b/browser/base/content/aboutNetError.xhtml
@@ -236,17 +236,17 @@
           title.parentNode.replaceChild(errTitle, title);
           // change id to the replaced child's id so styling works
           errTitle.id = "errorTitleText";
         }
 
         var sd = document.getElementById("errorShortDescText");
         if (sd) {
           if (gIsCertError) {
-            sd.textContent = document.getElementById("ed_nssBadCert").textContent;
+            sd.innerHTML = document.getElementById("ed_nssBadCert").innerHTML;
           }
           else {
             sd.textContent = getDescription();
           }
         }
         if (gIsCertError) {
           initPageCertError();
           return;