diff --git a/rollup.config.js b/rollup.config.js
index 85b978b5..d837ae1c 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -44,6 +44,7 @@ const baseConfig = ({ mainFile = pkg.main, moduleFile = pkg.module, extractCss =
     }),
     bundleSize(),
     postcss({
+      minimize: !extractCss,
       extract: extractCss,
     }),
     babel({