diff --git a/docker/php-fpm/src/config.php b/docker/php-fpm/src/config.php
index 02ad439..6e46471 100644
--- a/docker/php-fpm/src/config.php
+++ b/docker/php-fpm/src/config.php
@@ -23,11 +23,11 @@ const LG_CSS_OVERRIDES = false;
 const LG_CUSTOM_HEAD = false;
 
 // Enable or disable blocks/parts of the LG, pass these environment variables with any value to disable them;
-define('LG_BLOCK_NETWORK', !isset($_ENV['DISABLE_BLOCK_NETWORK']));
-define('LG_BLOCK_LOOKINGGLASS', !isset($_ENV['DISABLE_BLOCK_LOOKINGGLASS']));
-define('LG_BLOCK_SPEEDTEST', !isset($_ENV['DISABLE_BLOCK_SPEEDTEST']));
+define('LG_BLOCK_NETWORK', !getenv('DISABLE_BLOCK_NETWORK'));
+define('LG_BLOCK_LOOKINGGLASS', !getenv('DISABLE_BLOCK_LOOKINGGLASS'));
+define('LG_BLOCK_SPEEDTEST', !getenv('DISABLE_BLOCK_SPEEDTEST'));
 // This enables the custom block, which you can use to add something custom to the LG;
-define('LG_BLOCK_CUSTOM', isset($_ENV['ENABLE_CUSTOM_BLOCK']));
+define('LG_BLOCK_CUSTOM', getenv('ENABLE_CUSTOM_BLOCK'));
 
 // Define a file here which will be used to display the custom block, can be PHP too which outputs HTML;
 const LG_CUSTOM_HTML = __DIR__.'/custom.html.php';