diff --git a/htdocs/product/inventory/inventory.php b/htdocs/product/inventory/inventory.php
index eee7217eef3..644e7ba2025 100644
--- a/htdocs/product/inventory/inventory.php
+++ b/htdocs/product/inventory/inventory.php
@@ -660,7 +660,7 @@ if ($object->id > 0) {
 			// Real quantity
 			print '<td class="center">';
 			if ($object->status == $object::STATUS_VALIDATED) {
-				$qty_view = GETPOST("id_".$obj->rowid) && GETPOST("id_".$obj->rowid) >= 0 ? GETPOST("id_".$obj->rowid) : $obj->qty_view;
+				$qty_view = GETPOST("id_".$obj->rowid) && price2num(GETPOST("id_".$obj->rowid), 'MS') >= 0 ? GETPOST("id_".$obj->rowid) : $obj->qty_view;
 				$totalfound += price2num($qty_view, 'MS');
 				print '<input type="text" class="maxwidth75 right realqty" name="id_'.$obj->rowid.'" id="id_'.$obj->rowid.'_input" value="'.$qty_view.'">';
 				print '</td>';