diff --git a/index.js b/index.js
index eb3e23e..67cadb3 100644
--- a/index.js
+++ b/index.js
@@ -13,7 +13,7 @@ authoriseButton.addEventListener('click', redirect);
 
 window.onload = () => {
 
-    if (location.protocol !== 'https:') {
+    if (location.protocol !== 'https:' && !(location.hostname === 'localhost' || location.hostname === '127.0.0.1')) {
 
         location.replace(`https:${location.href.substring(location.protocol.length)}`);
 
diff --git a/js/pkce.js b/js/pkce.js
index 1b78936..e5d87f5 100644
--- a/js/pkce.js
+++ b/js/pkce.js
@@ -45,7 +45,7 @@ function generateRandomString (length) {
 
 async function redirect () {
 
-    if (location.protocol !== 'https:') {
+    if (location.protocol !== 'https:' && !(location.hostname === 'localhost' || location.hostname === '127.0.0.1')) {
 
         console.error('App only runs on HTTPS');