diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index 0a26bfb748c257219d98c4c634be863b561ab758..233bda1854281bf154b2662bd83b8e93409caae1 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -1307,6 +1307,8 @@ class Contrat extends CommonObject
 			if (empty($info_bits)) $info_bits=0;
 			if (empty($pu_ht) || ! is_numeric($pu_ht))  $pu_ht=0;
 			if (empty($pu_ttc)) $pu_ttc=0;
+            if (empty($txlocaltax1) || ! is_numeric($txlocaltax1)) $txlocaltax1=0;
+            if (empty($txlocaltax2) || ! is_numeric($txlocaltax2)) $txlocaltax2=0;
 
 			if ($price_base_type=='HT')
 			{