diff --git a/packages/app/src/entry.tsx b/packages/app/src/entry.tsx
index c41c1bb4b63e..3389caef5257 100644
--- a/packages/app/src/entry.tsx
+++ b/packages/app/src/entry.tsx
@@ -100,7 +100,7 @@ if (!(root instanceof HTMLElement) && import.meta.env.DEV) {
 }
 
 const getCurrentUrl = () => {
-  if (location.hostname.includes("opencode.ai")) return "http://localhost:4096"
+  if (/(^|\.)opencode\.ai$/.test(location.hostname)) return "http://localhost:4096"
   if (import.meta.env.DEV)
     return `http://${import.meta.env.VITE_OPENCODE_SERVER_HOST ?? "localhost"}:${import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"}`
   return location.origin