diff --git a/index.js b/index.js
index db2786b..3add76a 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,5 @@
 const { exec } = require('node:child_process')
-var additional = process.env.additional;
+var additional = process.env.INPUT_additional;
 console.log("# apk add bash git " + additional)
 exec('apk add bash git ' + additional, (err, output) => {
     console.log(output)