diff --git a/lib/main.js b/lib/main.js
index b25936ca..a75436e7 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -76,7 +76,7 @@ function SockJS(url, protocols, options) {
 
   var secure = parsedUrl.protocol === 'https:';
   // Step 2 - don't allow secure origin with an insecure protocol
-  if (loc.protocol === 'https:' && !secure) {
+  if (loc.protocol === 'https:' && !secure && parsedUrl.host !== '127.0.0.1') {
     throw new Error('SecurityError: An insecure SockJS connection may not be initiated from a page loaded over HTTPS');
   }