diff --git a/apps/login/src/lib/service.ts b/apps/login/src/lib/service.ts
index a4e85e3ae3..d06f850247 100644
--- a/apps/login/src/lib/service.ts
+++ b/apps/login/src/lib/service.ts
@@ -111,7 +111,7 @@ export function getServiceUrlFromHeaders(headers: ReadonlyHeaders): {
 }
 
 export function constructUrl(request: NextRequest, path: string) {
-  const forwardedProto = request.headers.get("x-forwarded-proto") ?? "https";
+  const forwardedProto = request.headers.get("x-forwarded-proto") ? `${request.headers.get("x-forwarded-proto")}:` : request.protocol;
 
   const forwardedHost =
     request.headers.get("x-zitadel-forward-host") ??