diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index 902ee8c0bf4..460b574c246 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -1355,8 +1355,8 @@ class Propal extends CommonObject
                         $line->fk_product_type  = $objp->fk_product_type;
 	                    $line->fk_unit          = $objp->fk_unit;
 
-                        $line->date_start  		= $objp->date_start;
-                        $line->date_end  		= $objp->date_end;
+                        $line->date_start  		= $this->db->jdate($objp->date_start);
+                        $line->date_end  		= $this->db->jdate($objp->date_end);
 
                         $line->fetch_optionals($line->id,$extralabelsline);