diff --git a/src/script/index.js b/src/script/index.js
index 7465075..880b8c8 100644
--- a/src/script/index.js
+++ b/src/script/index.js
@@ -92,7 +92,7 @@ choose_instance.addEventListener('focus', function (e) {
 })
 
 choose_instance.addEventListener('change', function (e) {
-    instance.value = `https://${choose_instance.value}`;
+    instance.value = normalizeUrl(choose_instance.value);
 });
 
 document