diff --git a/htdocs/supplier_proposal/class/supplier_proposal.class.php b/htdocs/supplier_proposal/class/supplier_proposal.class.php
index d14591b6b9f5adc95588b82d3bbbd8d0a4faf026..8cbc3882fc451153b041d4272466b006a06e7622 100644
--- a/htdocs/supplier_proposal/class/supplier_proposal.class.php
+++ b/htdocs/supplier_proposal/class/supplier_proposal.class.php
@@ -2781,7 +2781,7 @@ class SupplierProposalLine  extends CommonObject
         $sql.= " ".price2num($this->localtax2_tx).",";
 		$sql.= " '".$this->localtax1_type."',";
 		$sql.= " '".$this->localtax2_type."',";
-        $sql.= " ".($this->subprice?price2num($this->subprice):"null").",";
+        $sql.= " ".price2num($this->subprice).",";
         $sql.= " ".price2num($this->remise_percent).",";
         $sql.= " ".(isset($this->info_bits)?"'".$this->info_bits."'":"null").",";
         $sql.= " ".price2num($this->total_ht).",";