diff --git a/resources/static/common/js/provisioning.js b/resources/static/common/js/provisioning.js
index 5032562641df1919ddf0224eeae0cac0a01e633b..82aaa25c29b4a5b91dac6e5925621b8be4844e16 100644
--- a/resources/static/common/js/provisioning.js
+++ b/resources/static/common/js/provisioning.js
@@ -57,6 +57,7 @@ BrowserID.Provisioning = (function() {
     // positives if the user is on a slow connection.
     // the timeout should only happen if the provisioning site doesn't
     // want to provision for us.
+    // see https://github.com/mozilla/browserid/pull/1954
     function iframeOnLoad() {
       if (timeoutID) {
         clearTimeout(timeoutID);