diff --git a/src/disqus.js b/src/disqus.js
index ca1206a..86ec20d 100644
--- a/src/disqus.js
+++ b/src/disqus.js
@@ -80,9 +80,8 @@ function checkDisqus() {
         };
         img.src = 'https://' + domain + '/favicon.ico?' + +(new Date);
     };
-
-    for (var i of domain) {
-        check(i)
+    for (var i = 0; i < domain.length; i++) {
+        check(domain[i])
     };
 }