diff --git a/doc/check_namespace.php b/doc/check_namespace.php
index 111f726dea..c42a3d1d08 100755
--- a/doc/check_namespace.php
+++ b/doc/check_namespace.php
@@ -1,4 +1,4 @@
-#!/usr/bin/php -qC
+#!/usr/bin/env php -qC
 <?php
 /**
  * EGroupware - check namespace usage in converted code