diff --git a/src/frontend/src/modals/formModal/index.tsx b/src/frontend/src/modals/formModal/index.tsx
index 81b15559c..89e7c687b 100644
--- a/src/frontend/src/modals/formModal/index.tsx
+++ b/src/frontend/src/modals/formModal/index.tsx
@@ -160,7 +160,7 @@ export default function FormModal({
   }
 
   function getWebSocketUrl(chatId, isDevelopment = false) {
-    const isSecureProtocol = window.location.protocol === "https:";
+    const isSecureProtocol = window.location.protocol === "https:" || window.location.port === "443";
     const webSocketProtocol = isSecureProtocol ? "wss" : "ws";
     const host = isDevelopment ? "localhost:7860" : window.location.host;
     const chatEndpoint = `/api/v1/chat/${chatId}`;