diff --git a/public/index.php b/public/index.php
index 31dfbdd..d68c7c1 100644
--- a/public/index.php
+++ b/public/index.php
@@ -31,7 +31,7 @@
 |
 */
 
-if (defined('ECLIPSE_PACKAGE_DEV') and ECLIPSE_PACKAGE_DEV) {
+if ($_ENV['ECLIPSE_PACKAGE_DEV'] ?? false) {
     require '../../../../vendor/autoload.php';
 } else {
     require __DIR__.'/../vendor/autoload.php';