diff --git a/config.php b/config.php
index 65a95cf..6883b5a 100644
--- a/config.php
+++ b/config.php
@@ -4,7 +4,7 @@
 
 function get_cfg_from_env($name, $default='') {
   $ret = null;
-  $tmp = getent($name);
+  $tmp = getenv($name);
   if( isset($tmp) and $tmp != '' ) {
     $ret = $tmp;
   }