diff --git a/README.md b/README.md
index 6883bcf..15eb94b 100644
--- a/README.md
+++ b/README.md
@@ -91,14 +91,6 @@ pnpm dev:client                            # http://localhost:5173 (proxies /api
 Open `http://localhost:5173/` for the tablet UI and
 `http://localhost:5173/admin.html` for the backoffice.
 
-Running `dev:server` on a non-default `PORT`? Point `dev:client`'s proxy at it with
-`WUTZ_SERVER_PORT` (same value as `PORT`):
-
-```sh
-PORT=4000 ADMIN_PASSWORD=changeme pnpm dev:server
-WUTZ_SERVER_PORT=4000 pnpm dev:client
-```
-
 ## 📦 Production build
 
 ```sh
@@ -164,6 +156,3 @@ the service user owns the database directory automatically.
 - `ADMIN_PASSWORD` (**required** for backoffice login)
 - `WUTZ_TZ` (default `Europe/Berlin`) — timezone for stats display and grouping
 - `WUTZ_DAY_CUTOFF_HOUR` (default `5`) — sales before this local hour count toward the previous business day
-- `WUTZ_SERVER_PORT` (default `3000`, **client dev only** — not read by the server) — the port
-  `dev:client`'s Vite proxy targets; set it to match `dev:server`'s `PORT` when running the server
-  on something other than the default
diff --git a/client/vite.config.ts b/client/vite.config.ts
index c1e650b..f4ecd25 100644
--- a/client/vite.config.ts
+++ b/client/vite.config.ts
@@ -3,13 +3,6 @@ import preact from '@preact/preset-vite';
 import legacy from '@vitejs/plugin-legacy';
 import { resolve } from 'node:path';
 
-// The dev-server proxy target — same default (3000) as the server's own
-// `process.env.PORT ?? 3000` in server/src/index.ts. Override with
-// `WUTZ_SERVER_PORT` when running `dev:server` on a non-default port, e.g.:
-//   PORT=4000 pnpm dev:server
-//   WUTZ_SERVER_PORT=4000 pnpm dev:client
-const serverTarget = `http://localhost:${process.env.WUTZ_SERVER_PORT ?? 3000}`;
-
 export default defineConfig({
   plugins: [
     preact(),
@@ -31,9 +24,9 @@ export default defineConfig({
   server: {
     port: 5173,
     proxy: {
-      '/api': serverTarget,
-      '/admin': serverTarget,
-      '/healthz': serverTarget,
+      '/api': 'http://localhost:3000',
+      '/admin': 'http://localhost:3000',
+      '/healthz': 'http://localhost:3000',
     },
   },
 });