diff --git a/htdocs/asterisk/cidlookup.php b/htdocs/asterisk/cidlookup.php
index 9ef0e85f326..6b566e60f55 100644
--- a/htdocs/asterisk/cidlookup.php
+++ b/htdocs/asterisk/cidlookup.php
@@ -28,10 +28,11 @@
  *
  */
 
-$phone = $_GET['phone'];
 
 include '../master.inc.php';
 
+$phone = GETPOST('phone');
+
 
 // Security check
 if (empty($conf->clicktodial->enabled)) {