diff --git a/web/vite.config.ts b/web/vite.config.ts
index 624d06c..f98adaa 100644
--- a/web/vite.config.ts
+++ b/web/vite.config.ts
@@ -11,7 +11,10 @@ export default defineConfig({
     paraglideVitePlugin({
       project: "./project.inlang",
       outdir: "./src/paraglide",
-      outputStructure: "message-modules",
+      // Paraglide 2's default: one module per locale in the dev server and tests (a few requests),
+      // one per message in production builds (tree shaking). v3 would serve virtual modules only Vite
+      // can resolve.
+      outputStructure: process.env.NODE_ENV === "production" ? "message-modules" : "locale-modules",
       strategy: ["localStorage", "preferredLanguage", "baseLocale"],
     }),
     tanstackRouter({ target: "react", autoCodeSplitting: true }),