diff --git a/src/SPC/builder/extension/opcache.php b/src/SPC/builder/extension/opcache.php
index 280a4a4d..cc1dfcc1 100644
--- a/src/SPC/builder/extension/opcache.php
+++ b/src/SPC/builder/extension/opcache.php
@@ -52,7 +52,7 @@ class opcache extends Extension
         if ((SPCTarget::getTargetOS() === 'Linux' &&
             SPCTarget::getLibc() === 'musl' &&
             $this->builder->getOption('enable-zts') &&
-            GNU_ARCH === 'x86_64' &&
+            arch2gnu(php_uname('m')) === 'x86_64' &&
             $phpVersionID < 80500) ||
             $this->builder->getOption('disable-opcache-jit')
         ) {