diff --git a/htdocs/compta/sociales/card.php b/htdocs/compta/sociales/card.php
index 85e555de468..db3a99759d1 100644
--- a/htdocs/compta/sociales/card.php
+++ b/htdocs/compta/sociales/card.php
@@ -241,11 +241,12 @@ if ($action == 'confirm_clone' && $confirm == 'yes' && ($user->rights->tax->char
 	{
 		$object->paye = 0;
 		$object->id = $object->ref = null;
+		$object->lib = $langs->trans("CopyOf").' '.$object->lib;
 
-		if(GETPOST('clone_for_next_month') != '') {
-
-			$object->date_ech = strtotime('+1month', $object->date_ech);
-			$object->periode = strtotime('+1month', $object->periode);
+		if (GETPOST('clone_for_next_month') != '')
+		{
+			$object->date_ech = dol_time_plus_duree($object->date_ech, 1, 'm');
+			$object->periode = dol_time_plus_duree($object->periode, 1, 'm');
 		}
 
 		if ($object->check())
diff --git a/htdocs/langs/en_US/compta.lang b/htdocs/langs/en_US/compta.lang
index b176560ced8..32ea8dbaa52 100644
--- a/htdocs/langs/en_US/compta.lang
+++ b/htdocs/langs/en_US/compta.lang
@@ -233,7 +233,7 @@ ACCOUNTING_ACCOUNT_CUSTOMER_Desc=The dedicated accounting account defined on thi
 ACCOUNTING_ACCOUNT_SUPPLIER=Accounting account used for vendor third parties
 ACCOUNTING_ACCOUNT_SUPPLIER_Desc=The dedicated accounting account defined on third party card will be used for Subledger accounting only. This one will be used for General Ledger and as default value of Subledger accounting if dedicated supplier accounting account on third party is not defined.
 CloneTax=Clone a social/fiscal tax
-ConfirmCloneTax=Confirm the clone of a social/fiscal tax payment
+ConfirmCloneTax=Confirm the clone of a social/fiscal tax
 CloneTaxForNextMonth=Clone it for next month
 SimpleReport=Simple report
 AddExtraReport=Extra reports (add foreign and national customer report)