diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index a68f09e5ee1..64c5063e8a2 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -2594,7 +2594,7 @@ class Form
 		}
 
 		$opt.= "</option>\n";
-		$optJson = array('key'=>$outkey, 'value'=>$outref, 'label'=>$outval, 'label2'=>$outlabel, 'desc'=>$outdesc, 'type'=>$outtype, 'price_ht'=>$outprice_ht, 'price_ttc'=>$outprice_ttc, 'pricebasetype'=>$outpricebasetype, 'tva_tx'=>$outtva_tx, 'qty'=>$outqty, 'discount'=>$outdiscount, 'duration_value'=>$outdurationvalue, 'duration_unit'=>$outdurationunit);
+		$optJson = array('key'=>$outkey, 'value'=>$outref, 'label'=>$outval, 'label2'=>$outlabel, 'desc'=>$outdesc, 'type'=>$outtype, 'price_ht'=>price2num($outprice_ht), 'price_ttc'=>price2num($outprice_ttc), 'pricebasetype'=>$outpricebasetype, 'tva_tx'=>$outtva_tx, 'qty'=>$outqty, 'discount'=>$outdiscount, 'duration_value'=>$outdurationvalue, 'duration_unit'=>$outdurationunit);
 	}
 
     // phpcs:disable PEAR.NamingConventions.ValidFunctionName.ScopeNotCamelCaps