diff --git a/htdocs/public/paypal/newpayment.php b/htdocs/public/paypal/newpayment.php
index 860d2c3ab55..f00441f68ad 100755
--- a/htdocs/public/paypal/newpayment.php
+++ b/htdocs/public/paypal/newpayment.php
@@ -308,7 +308,7 @@ $var=false;
 $valid=true;
 if (! empty($conf->global->PAYPAL_SECURITY_TOKEN) )
 {
-	$token = dol_hash($conf->global->PAYPAL_SECURITY_TOKEN . $SOURCE . $ref, 2);
+	$token = $conf->global->PAYPAL_SECURITY_TOKEN;
 	if ($SECUREKEY != $token) $valid=false;
 }