diff --git a/packages/astro/src/core/build/vite-plugin-css.ts b/packages/astro/src/core/build/vite-plugin-css.ts
index 04403aed5..50c0dba75 100644
--- a/packages/astro/src/core/build/vite-plugin-css.ts
+++ b/packages/astro/src/core/build/vite-plugin-css.ts
@@ -239,7 +239,7 @@ export function rollupPluginAstroBuildCSS(options: PluginOptions): VitePlugin[]
 						if (output.type === 'asset') {
 							if (output.name?.endsWith('.css') && typeof output.source === 'string') {
 								const cssTarget = settings.config.vite.build?.cssTarget;
-								const minify = settings.config.vite.build?.minify !== false
+								const minify = settings.config.vite.build?.minify !== false;
 								const { code: minifiedCSS } = await esbuild.transform(output.source, {
 									loader: 'css',
 									minify,