diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index 5fa4dbc918a..eb3a9ed2604 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -2016,7 +2016,25 @@ if (empty($reshook))
 		$line->fetch(GETPOST('lineid'));
 		$percent = $line->get_prev_progress($object->id);
 
-		if (GETPOST('progress') < $percent)
+		if($object->type == Facture::TYPE_CREDIT_NOTE && $object->situation_cycle_ref>0)
+		{
+		    // in case of situation credit note
+		    if(GETPOST('progress') >= 0 )
+		    {
+		        $mesg = $langs->trans("CantBeNullOrPositive");
+		        setEventMessages($mesg, null, 'warnings');
+		        $error++;
+		        $result = -1;
+		    }
+		    elseif (GETPOST('progress') < $line->situation_percent) // TODO : use a modified $line->get_prev_progress($object->id) result
+		    {
+		        $mesg = $langs->trans("CantBeLessThanMinPercent");
+		        setEventMessages($mesg, null, 'warnings');
+		        $error++;
+		        $result = -1;
+		    }
+		}
+		elseif (GETPOST('progress') < $percent)
 		{
 			$mesg = '<div class="warning">' . $langs->trans("CantBeLessThanMinPercent") . '</div>';
 			setEventMessages($mesg, null, 'warnings');