diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index bedf489467e..56567c24ee3 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -3939,7 +3939,7 @@ class PropaleLigne extends CommonObjectLine
 		$sql.= " ".price2num($this->localtax2_tx).",";
 		$sql.= " '".$this->db->escape($this->localtax1_type)."',";
 		$sql.= " '".$this->db->escape($this->localtax2_type)."',";
-		$sql.= " ".($this->subprice?price2num($this->subprice):"null").",";
+		$sql.= " ".(price2num($this->subprice)!==''?price2num($this->subprice):"null").",";
 		$sql.= " ".price2num($this->remise_percent).",";
 		$sql.= " ".(isset($this->info_bits)?"'".$this->db->escape($this->info_bits)."'":"null").",";
 		$sql.= " ".price2num($this->total_ht).",";
diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index d2f1c21654e..9007490d421 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -4065,7 +4065,7 @@ class OrderLine extends CommonOrderLine
         $sql.= ' '.(! empty($this->fk_product)?$this->fk_product:"null").',';
         $sql.= " '".$this->db->escape($this->product_type)."',";
         $sql.= " '".price2num($this->remise_percent)."',";
-        $sql.= " ".($this->subprice!=''?"'".price2num($this->subprice)."'":"null").",";
+        $sql.= " ".(price2num($this->subprice)!==''?price2num($this->subprice):"null").",";
         $sql.= " ".($this->price!=''?"'".price2num($this->price)."'":"null").",";
         $sql.= " '".price2num($this->remise)."',";
         $sql.= ' '.(! empty($this->fk_remise_except)?$this->fk_remise_except:"null").',';
@@ -4074,11 +4074,11 @@ class OrderLine extends CommonOrderLine
 		$sql.= ' '.(! empty($this->fk_fournprice)?$this->fk_fournprice:"null").',';
 		$sql.= ' '.price2num($this->pa_ht).',';
         $sql.= " '".$this->db->escape($this->info_bits)."',";
-        $sql.= " '".price2num($this->total_ht)."',";
-        $sql.= " '".price2num($this->total_tva)."',";
-        $sql.= " '".price2num($this->total_localtax1)."',";
-        $sql.= " '".price2num($this->total_localtax2)."',";
-        $sql.= " '".price2num($this->total_ttc)."',";
+        $sql.= " ".price2num($this->total_ht).",";
+        $sql.= " ".price2num($this->total_tva).",";
+        $sql.= " ".price2num($this->total_localtax1).",";
+        $sql.= " ".price2num($this->total_localtax2).",";
+        $sql.= " ".price2num($this->total_ttc).",";
         $sql.= " ".(! empty($this->date_start)?"'".$this->db->idate($this->date_start)."'":"null").',';
         $sql.= " ".(! empty($this->date_end)?"'".$this->db->idate($this->date_end)."'":"null").',';
 	    $sql.= ' '.(!$this->fk_unit ? 'NULL' : $this->fk_unit);