diff --git a/example/expiredHelloWorld.php b/example/expiredHelloWorld.php
index 9fe925f..e19a3e7 100644
--- a/example/expiredHelloWorld.php
+++ b/example/expiredHelloWorld.php
@@ -15,7 +15,7 @@
 $obfuscatored = AlomEncoder::Obfuscator(function(){
   $var = "Hello I am hidden! find me";
   print "Hello world!";
-  unset($var);
+  alom_protect_var($var);
 }, $settings);
 file_put_contents('expiredHelloWorld.obfs.php', $obfuscatored);