diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index e0e89b7b978..d6277d7c668 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -193,7 +193,7 @@ if (empty($reshook))
 		$result = $object->fetch($id);
 
 		if ($object->statut == Facture::STATUS_CLOSED || ($object->statut == Facture::STATUS_ABANDONED && ($object->close_code != 'replaced' || $object->getIdReplacingInvoice() == 0)) || ($object->statut == Facture::STATUS_VALIDATED && $object->paye == 1)) {    // ($object->statut == 1 && $object->paye == 1) should not happened but can be found when data are corrupted
-			$result = $object->set_unpaid($user);
+			$result = $object->setUnpaid($user);
 			if ($result > 0) {
 				header('Location: '.$_SERVER["PHP_SELF"].'?facid='.$id);
 				exit();
diff --git a/htdocs/compta/facture/class/api_invoices.class.php b/htdocs/compta/facture/class/api_invoices.class.php
index 316f43bc011..97342af0d94 100644
--- a/htdocs/compta/facture/class/api_invoices.class.php
+++ b/htdocs/compta/facture/class/api_invoices.class.php
@@ -960,7 +960,7 @@ class Invoices extends DolibarrApi
 			throw new RestException(401, 'Access not allowed for login '.DolibarrApiAccess::$user->login);
 		}
 
-		$result = $this->invoice->set_unpaid(DolibarrApiAccess::$user);
+		$result = $this->invoice->setUnpaid(DolibarrApiAccess::$user);
 		if ($result == 0) {
 			throw new RestException(304, 'Nothing done');
 		}
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index 26c40c2c45e..bd19293ae43 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -2301,6 +2301,21 @@ class Facture extends CommonInvoice
 	public function set_paid($user, $close_code = '', $close_note = '')
 	{
 		// phpcs:enable
+		dol_syslog(get_class($this)."::set_paid is deprecated, use setPaid instead", LOG_NOTICE);
+		$this->setPaid($user, $close_code, $close_note);
+	}
+
+	/**
+	 *  Tag the invoice as paid completely (if close_code is filled) => this->fk_statut=2, this->paye=1
+	 *  or partialy (if close_code filled) + appel trigger BILL_PAYED => this->fk_statut=2, this->paye stay 0
+	 *
+	 *  @param	User	$user      	Object user that modify
+	 *	@param  string	$close_code	Code renseigne si on classe a payee completement alors que paiement incomplet (cas escompte par exemple)
+	 *	@param  string	$close_note	Commentaire renseigne si on classe a payee alors que paiement incomplet (cas escompte par exemple)
+	 *  @return int         		<0 if KO, >0 if OK
+	 */
+	public function setPaid($user, $close_code = '', $close_note = '')
+	{
 		$error = 0;
 
 		if ($this->paye != 1)
@@ -2352,12 +2367,28 @@ class Facture extends CommonInvoice
 	 *	Fonction utilisee quand un paiement prelevement est refuse,
 	 * 	ou quand une facture annulee et reouverte.
 	 *
+	 *	@deprecated
+	 *  @see setUnpaid()
 	 *  @param	User	$user       Object user that change status
 	 *  @return int         		<0 if KO, >0 if OK
 	 */
 	public function set_unpaid($user)
 	{
 		// phpcs:enable
+		dol_syslog(get_class($this)."::set_unpaid is deprecated, use setUnpaid instead", LOG_NOTICE);
+		$this->setUnpaid($user);
+	}
+
+	/**
+	 *  Tag la facture comme non payee completement + appel trigger BILL_UNPAYED
+	 *	Fonction utilisee quand un paiement prelevement est refuse,
+	 * 	ou quand une facture annulee et reouverte.
+	 *
+	 *  @param	User	$user       Object user that change status
+	 *  @return int         		<0 if KO, >0 if OK
+	 */
+	public function setUnpaid($user)
+	{
 		$error = 0;
 
 		$this->db->begin();
diff --git a/htdocs/compta/paiement/cheque/class/remisecheque.class.php b/htdocs/compta/paiement/cheque/class/remisecheque.class.php
index 4e22d8f141a..9c685bcce1d 100644
--- a/htdocs/compta/paiement/cheque/class/remisecheque.class.php
+++ b/htdocs/compta/paiement/cheque/class/remisecheque.class.php
@@ -788,7 +788,7 @@ class RemiseCheque extends CommonObject
 			{
 				$invoice = new Facture($this->db);
 				$invoice->fetch($obj->fk_facture);
-				$invoice->set_unpaid($user);
+				$invoice->setUnpaid($user);
 
 				$rejectedPayment->amounts[$obj->fk_facture] = price2num($obj->amount) * -1;
 			}
diff --git a/htdocs/compta/prelevement/class/rejetprelevement.class.php b/htdocs/compta/prelevement/class/rejetprelevement.class.php
index 8b7d21d221f..28a3b1e4efa 100644
--- a/htdocs/compta/prelevement/class/rejetprelevement.class.php
+++ b/htdocs/compta/prelevement/class/rejetprelevement.class.php
@@ -184,7 +184,7 @@ class RejetPrelevement
 			//Tag invoice as unpaid
 			dol_syslog("RejetPrelevement::Create set_unpaid fac ".$fac->ref);
 
-			$fac->set_unpaid($user);
+			$fac->setUnpaid($user);
 
 			//TODO: Must be managed by notifications module
 			// Send email to sender of the standing order request