diff --git a/packages/frontend/lib/vite-plugin-create-search-index.ts b/packages/frontend/lib/vite-plugin-create-search-index.ts
index 946c903c8b..3e085a76b3 100644
--- a/packages/frontend/lib/vite-plugin-create-search-index.ts
+++ b/packages/frontend/lib/vite-plugin-create-search-index.ts
@@ -220,7 +220,7 @@ export default function pluginCreateSearchIndex(options: {
 		enforce: 'pre',
 
 		async buildStart() {
-			if (isDevServer) {
+			if (!isDevServer) {
 				return;
 			}