diff --git a/examples/react-server/src/features/bootstrap/css.ts b/examples/react-server/src/features/bootstrap/css.ts
index 7a649ac7..5252e7cc 100644
--- a/examples/react-server/src/features/bootstrap/css.ts
+++ b/examples/react-server/src/features/bootstrap/css.ts
@@ -6,7 +6,7 @@ import { $__global } from "../../global";
 import { createVirtualPlugin } from "../utils/plugin";
 import { ENTRY_CLIENT_BOOTSTRAP } from "./plugin";
 
-export const VIRTUAL_SSR_CSS = "virtual:ssr-css.css";
+const VIRTUAL_SSR_CSS = "virtual:ssr-css.css";
 export const VIRTUAL_COPY_SERVER_CSS = "virtual:copy-server-css.js";
 
 export function vitePluginServerCss({
diff --git a/examples/react-server/src/features/bootstrap/plugin.ts b/examples/react-server/src/features/bootstrap/plugin.ts
index b7a5c394..fc2c5776 100644
--- a/examples/react-server/src/features/bootstrap/plugin.ts
+++ b/examples/react-server/src/features/bootstrap/plugin.ts
@@ -3,7 +3,7 @@ import { tinyassert, typedBoolean } from "@hiogawa/utils";
 import type { Manifest, PluginOption, ViteDevServer } from "vite";
 import { $__global } from "../../global";
 import { createVirtualPlugin } from "../utils/plugin";
-import { VIRTUAL_COPY_SERVER_CSS, VIRTUAL_SSR_CSS } from "./css";
+import { VIRTUAL_COPY_SERVER_CSS } from "./css";
 
 export const ENTRY_CLIENT_BOOTSTRAP = "virtual:entry-client-bootstrap";