diff --git a/htdocs/public/payment/paymentok.php b/htdocs/public/payment/paymentok.php
index c46542ed3c4..c8222c4c4aa 100644
--- a/htdocs/public/payment/paymentok.php
+++ b/htdocs/public/payment/paymentok.php
@@ -412,7 +412,7 @@ if ($ispaymentok) {
 
 			$currencyCodeType = $_SESSION['currencyCodeType'];
 
-			dol_syslog("FinalPaymentAmt=".$FinalPaymentAmt." paymentTypeId=".$paymentTypeId, LOG_DEBUG, 0, '_payment');
+			dol_syslog("FinalPaymentAmt=".$FinalPaymentAmt." paymentTypeId=".$paymentTypeId." currencyCodeType=".$currencyCodeType, LOG_DEBUG, 0, '_payment');
 
 			// Do action only if $FinalPaymentAmt is set (session variable is cleaned after this page to avoid duplicate actions when page is POST a second time)
 			if (!empty($FinalPaymentAmt) && $paymentTypeId > 0) {
@@ -440,6 +440,9 @@ if ($ispaymentok) {
 					}
 				}
 
+				// Security protection:
+				// TODO check that currency is same ?
+
 				if (! $error) {
 					// We validate the member (no effect if it is already validated)
 					$result = ($object->status == $object::STATUS_EXCLUDED) ? -1 : $object->validate($user); // if membre is excluded (status == -2) the new validation is not possible
@@ -1684,6 +1687,8 @@ if ($ispaymentok) {
 
 print "\n</div>\n";
 
+print "<!-- Info for payment: FinalPaymentAmt=".dol_escape_htmltag($FinalPaymentAmt)." paymentTypeId=".dol_escape_htmltag($paymentTypeId)." currencyCodeType=".dol_escape_htmltag($currencyCodeType)."  -->\n";
+
 
 htmlPrintOnlinePaymentFooter($mysoc, $langs, 0, $suffix);