diff --git a/htdocs/product/list.php b/htdocs/product/list.php
index 50001d25026..5e50925fbbe 100644
--- a/htdocs/product/list.php
+++ b/htdocs/product/list.php
@@ -195,9 +195,9 @@ $arrayfields = array(
 	'p.volume_units'=>array('label'=>$langs->trans('VolumeUnits'), 'checked'=>0, 'enabled'=>(!empty($conf->product->enabled) && empty($conf->global->PRODUCT_DISABLE_VOLUME) && $type != '1'), 'position'=>31),
     'cu.label'=>array('label'=>$langs->trans("DefaultUnitToShow"), 'checked'=>0, 'enabled'=>(!empty($conf->product->enabled) && !empty($conf->global->PRODUCT_USE_UNITS)), 'position'=>32),
     'p.sellprice'=>array('label'=>$langs->trans("SellingPrice"), 'checked'=>1, 'enabled'=>empty($conf->global->PRODUIT_MULTIPRICES), 'position'=>40),
-	'p.minbuyprice'=>array('label'=>$langs->trans("BuyingPriceMinShort"), 'checked'=>1, 'enabled'=>(!empty($user->rights->fournisseur->lire)), 'position'=>41),
-	'p.numbuyprice'=>array('label'=>$langs->trans("BuyingPriceNumShort"), 'checked'=>0, 'enabled'=>(!empty($user->rights->fournisseur->lire)), 'position'=>42),
-    'p.tva_tx'=>array('label'=>$langs->trans("VATRate"), 'checked'=>0, 'enabled'=>(!empty($user->rights->fournisseur->lire)), 'position'=>43),
+    'p.tva_tx'=>array('label'=>$langs->trans("VATRate"), 'checked'=>0, 'enabled'=>empty($conf->global->PRODUIT_MULTIPRICES), 'position'=>41),
+	'p.minbuyprice'=>array('label'=>$langs->trans("BuyingPriceMinShort"), 'checked'=>1, 'enabled'=>(!empty($user->rights->fournisseur->lire)), 'position'=>42),
+	'p.numbuyprice'=>array('label'=>$langs->trans("BuyingPriceNumShort"), 'checked'=>0, 'enabled'=>(!empty($user->rights->fournisseur->lire)), 'position'=>43),
     'p.pmp'=>array('label'=>$langs->trans("PMPValueShort"), 'checked'=>0, 'enabled'=>(!empty($user->rights->fournisseur->lire)), 'position'=>44),
 	'p.seuil_stock_alerte'=>array('label'=>$langs->trans("StockLimit"), 'checked'=>0, 'enabled'=>(!empty($conf->stock->enabled) && $user->rights->stock->lire && $contextpage != 'service'), 'position'=>50),
 	'p.desiredstock'=>array('label'=>$langs->trans("DesiredStock"), 'checked'=>1, 'enabled'=>(!empty($conf->stock->enabled) && $user->rights->stock->lire && $contextpage != 'service'), 'position'=>51),
@@ -360,7 +360,7 @@ if ($search_barcode) $sql .= natural_search('p.barcode', $search_barcode);
 if (isset($search_tosell) && dol_strlen($search_tosell) > 0 && $search_tosell != -1) $sql .= " AND p.tosell = ".((int) $search_tosell);
 if (isset($search_tobuy) && dol_strlen($search_tobuy) > 0 && $search_tobuy != -1)   $sql .= " AND p.tobuy = ".((int) $search_tobuy);
 if (isset($search_tobatch) && dol_strlen($search_tobatch) > 0 && $search_tobatch != -1)   $sql .= " AND p.tobatch = ".((int) $search_tobatch);
-if ($search_vatrate) $sql .= natural_search('p.tva_tx', $search_vatrate);
+if ($search_vatrate) $sql .= natural_search('p.tva_tx', $search_vatrate, 1);
 if (dol_strlen($canvas) > 0)                    $sql .= " AND p.canvas = '".$db->escape($canvas)."'";
 if ($catid > 0)     $sql .= " AND cp.fk_categorie = ".$catid;
 if ($catid == -2)   $sql .= " AND cp.fk_categorie IS NULL";
@@ -877,7 +877,7 @@ if ($resql)
         print_liste_field_titre($arrayfields['p.numbuyprice']['label'], $_SERVER["PHP_SELF"], "", "", $param, '', $sortfield, $sortorder, 'right ');
     }
     if (!empty($arrayfields['p.tva_tx']['checked'])) {
-        print_liste_field_titre($arrayfields['p.tva_tx']['label'], $_SERVER["PHP_SELF"], "", "", $param, '', $sortfield, $sortorder, 'right ');
+        print_liste_field_titre($arrayfields['p.tva_tx']['label'], $_SERVER["PHP_SELF"], 'p.tva_tx', "", $param, '', $sortfield, $sortorder, 'right ');
     }
     if (!empty($arrayfields['p.pmp']['checked'])) {
         print_liste_field_titre($arrayfields['p.pmp']['label'], $_SERVER["PHP_SELF"], "", "", $param, '', $sortfield, $sortorder, 'right ');