diff --git a/htdocs/compta/paiement/class/paiement.class.php b/htdocs/compta/paiement/class/paiement.class.php
index 04617cabd64..45c9d0b526b 100644
--- a/htdocs/compta/paiement/class/paiement.class.php
+++ b/htdocs/compta/paiement/class/paiement.class.php
@@ -790,7 +790,7 @@ class Paiement extends CommonObject
 		$langs->load("bills");
 
 		// Clean parameters (if not defined or using deprecated value)
-		if (empty($conf->global->PAYMENT_ADDON)) $conf->global->PAYMENT_ADDON='mod_payment_ant';
+		if (empty($conf->global->PAYMENT_ADDON)) $conf->global->PAYMENT_ADDON='mod_payment_cicada';
 		else if ($conf->global->PAYMENT_ADDON=='ant') $conf->global->PAYMENT_ADDON='mod_payment_ant';
 		else if ($conf->global->PAYMENT_ADDON=='cicada') $conf->global->PAYMENT_ADDON='mod_payment_cicada';
 
diff --git a/htdocs/core/modules/payment/mod_payment_cicada.php b/htdocs/core/modules/payment/mod_payment_cicada.php
index aea1fb38360..482261e9fe1 100644
--- a/htdocs/core/modules/payment/mod_payment_cicada.php
+++ b/htdocs/core/modules/payment/mod_payment_cicada.php
@@ -70,7 +70,7 @@ class mod_payment_cicada extends ModeleNumRefPayments
 
 		$payyymm=''; $max='';
 
-		$posindice=8;
+		$posindice=9;
 		$sql = "SELECT MAX(CAST(SUBSTRING(ref FROM ".$posindice.") AS SIGNED)) as max";
 		$sql.= " FROM ".MAIN_DB_PREFIX."paiement";
 		$sql.= " WHERE ref LIKE '".$this->prefix."____-%'";