diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index e9fdcc9..d6fea04 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -10,8 +10,8 @@ export default defineConfig({
   },
   server: {
     proxy: {
-      // Dev: /api → FastAPI-Backend
-      "/api": { target: "http://127.0.0.1:9000", changeOrigin: true },
+      // Dev: /api → FastAPI-Backend (Override via MC_API_TARGET, z.B. die Box)
+      "/api": { target: process.env.MC_API_TARGET || "http://127.0.0.1:9000", changeOrigin: true },
     },
   },
   build: { outDir: "dist" },