diff --git a/test/intl402/Segmenter/ctor-custom-get-prototype-poison-throws.js b/test/intl402/Segmenter/ctor-custom-get-prototype-poison-throws.js
index 75db21c858..a16969c127 100644
--- a/test/intl402/Segmenter/ctor-custom-get-prototype-poison-throws.js
+++ b/test/intl402/Segmenter/ctor-custom-get-prototype-poison-throws.js
@@ -19,7 +19,7 @@ info: |
 features: [Intl.Segmenter, Reflect, Proxy]
 ---*/
 
-var custom = new Proxy(new Function(), {
+const custom = new Proxy(new Function(), {
   get(target, key) {
     if (key === 'prototype') {
       throw new Test262Error();