diff --git a/htdocs/public/payment/newpayment.php b/htdocs/public/payment/newpayment.php
index 179e31d83cf..acd0f5e4740 100644
--- a/htdocs/public/payment/newpayment.php
+++ b/htdocs/public/payment/newpayment.php
@@ -284,10 +284,18 @@ if ($action == 'dopayment')
 		$desc=GETPOST("desc",'alpha');
 
 		$mesg='';
-		if (empty($PAYPAL_API_PRICE) || ! is_numeric($PAYPAL_API_PRICE))   $mesg=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Amount"));
+		if (empty($PAYPAL_API_PRICE) || ! is_numeric($PAYPAL_API_PRICE))
+		{
+			$mesg=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("Amount"));
+			$action = '';
+		}
 		//elseif (empty($EMAIL))          $mesg=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("YourEMail"));
 		//elseif (! isValidEMail($EMAIL)) $mesg=$langs->trans("ErrorBadEMail",$EMAIL);
-		elseif (! $origfulltag)        $mesg=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("PaymentCode"));
+		elseif (! $origfulltag)
+		{
+			$mesg=$langs->trans("ErrorFieldRequired",$langs->transnoentitiesnoconv("PaymentCode"));
+			$action = '';
+		}
 
 		//var_dump($_POST);
 		if (empty($mesg))