diff --git a/src/cli.js b/src/cli.js
index 80b590e93..5d33eafa4 100644
--- a/src/cli.js
+++ b/src/cli.js
@@ -420,7 +420,10 @@ async function build() {
     let resolvedConfig = resolveConfigInternal(config)
 
     if (args['--purge']) {
-      resolvedConfig.purge = args['--purge'].split(/(?<!{[^}]+),/)
+      resolvedConfig.purge = {
+        enabled: true,
+        content: args['--purge'].split(/(?<!{[^}]+),/),
+      }
     }
 
     if (args['--jit']) {