diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index fe5d5c3ab0a..d3cddeb6095 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -318,8 +318,8 @@ if (empty($reshook))
 			//var_dump($array_of_total_ht_per_vat_rate);exit;
 			foreach ($array_of_total_ht_per_vat_rate as $vatrate => $tmpvalue)
 			{
-				$tmp_total_ht = $array_of_total_ht_per_vat_rate[$vatrate];
-				$tmp_total_ht_devise = $array_of_total_ht_devise_per_vat_rate[$vatrate];
+				$tmp_total_ht = price2num($array_of_total_ht_per_vat_rate[$vatrate]);
+				$tmp_total_ht_devise = price2num($array_of_total_ht_devise_per_vat_rate[$vatrate]);
 
 				if (($tmp_total_ht < 0 || $tmp_total_ht_devise < 0) && empty($conf->global->FACTURE_ENABLE_NEGATIVE_LINES))
 				{
diff --git a/htdocs/core/class/html.formmargin.class.php b/htdocs/core/class/html.formmargin.class.php
index 83923ffa6c7..b9ce03a6074 100644
--- a/htdocs/core/class/html.formmargin.class.php
+++ b/htdocs/core/class/html.formmargin.class.php
@@ -98,7 +98,8 @@ class FormMargin
 
 			$pv = $line->total_ht;
 			$pa_ht = ($pv < 0 ? -$line->pa_ht : $line->pa_ht); // We choosed to have line->pa_ht always positive in database, so we guess the correct sign
-			if ($object->element == 'facture' && $object->type == $object::TYPE_SITUATION) {
+			if (($object->element == 'facture' && $object->type == $object::TYPE_SITUATION)
+				|| ($object->element == 'facture' && $object->type == $object::TYPE_CREDIT_NOTE && $conf->global->INVOICE_USE_SITUATION_CREDIT_NOTE && $object->situation_counter > 0)) {
 				$pa = $line->qty * $pa_ht * ($line->situation_percent / 100);
 			} else {
 				$pa = $line->qty * $pa_ht;