diff --git a/src/SPC/builder/macos/MacOSBuilder.php b/src/SPC/builder/macos/MacOSBuilder.php
index 768567c8..feef9629 100644
--- a/src/SPC/builder/macos/MacOSBuilder.php
+++ b/src/SPC/builder/macos/MacOSBuilder.php
@@ -99,7 +99,7 @@ class MacOSBuilder extends UnixBuilderBase
         SourcePatcher::patchBeforeConfigure($this);
 
         $phpVersionID = $this->getPHPVersionID();
-        $json_74 = $phpVersionID < 80000 ? '--enable-json ' : '';
+        $json_74 = $this->getPHPVersionID() < 80000 ? '--enable-json ' : '';
         $zts = $this->getOption('enable-zts', false) ? '--enable-zts --disable-zend-signals ' : '';
 
         $opcache_jit = !$this->getOption('disable-opcache-jit', false);