diff --git a/bin/centreon b/bin/centreon
index 50b2611d460..3fab25930c5 100755
--- a/bin/centreon
+++ b/bin/centreon
@@ -1,4 +1,4 @@
-#! /usr/bin/php
+#!/usr/bin/env php
 <?php
 /**
  * Copyright 2005-2015 CENTREON
diff --git a/cron/downtimeManager.php b/cron/downtimeManager.php
index 70b4207297f..ccb6113d94b 100644
--- a/cron/downtimeManager.php
+++ b/cron/downtimeManager.php
@@ -1,4 +1,4 @@
-#!/usr/bin/php
+#!/usr/bin/env php
 <?php
 /**
  * Copyright 2005-2015 Centreon
@@ -130,4 +130,3 @@
 
 # Purge downtime cache
 $downtimeObj->purgeCache();
-
diff --git a/libinstall/clean_session.php b/libinstall/clean_session.php
index 928397f4201..16a11cc3a78 100644
--- a/libinstall/clean_session.php
+++ b/libinstall/clean_session.php
@@ -1,4 +1,4 @@
-#!/usr/bin/php
+#!/usr/bin/env php
 <?php
 /*
  * Centreon is developped with GPL Licence 2.0 :
@@ -56,4 +56,3 @@ function usage($command)
 }
 
 exit(0);
-