diff --git a/index.js b/index.js
index 6c9c0168..320a12ce 100644
--- a/index.js
+++ b/index.js
@@ -18,6 +18,7 @@ const pluginOptions = {
 	emitCss: true,
 
 	// legacy
+	onwarn: true,
 	shared: true,
 	style: true,
 	script: true,