diff --git a/src/Util/Common.php b/src/Util/Common.php
index 586548bcaf..29be585295 100644
--- a/src/Util/Common.php
+++ b/src/Util/Common.php
@@ -218,7 +218,7 @@ public static function isStdinATTY()
         }
 
         // Next try is detecting whether we have `tty` installed and use that.
-        if (defined('PHP_WINDOWS_VERSION_PLATFORM') === true) {
+        if (PHP_OS_FAMILY === 'Windows') {
             $devnull = 'NUL';
             $which   = 'where';
         } else {