diff --git a/src/perms.php b/src/perms.php
index c98f41f0..d3e0858f 100644
--- a/src/perms.php
+++ b/src/perms.php
@@ -20,8 +20,6 @@ define('MSZ_PERM_SETS', [
     MSZ_PERMS_ALLOW, MSZ_PERMS_DENY
 ]);
 
-$_msz_perms_cache = [];
-
 function perms_construct_cache_key(string $prefix, string $mode, int $pid): string
 {
     return $prefix . '_' . $mode . '_' . $pid;