diff --git a/htdocs/product/list.php b/htdocs/product/list.php
index ad2e034e3c5..e4cd83a553e 100644
--- a/htdocs/product/list.php
+++ b/htdocs/product/list.php
@@ -422,7 +422,7 @@ if ($search_accountancy_code_sell_export) $sql .= natural_search('p.accountancy_
 if ($search_accountancy_code_buy)         $sql .= natural_search('p.accountancy_code_buy', $search_accountancy_code_buy);
 if ($search_accountancy_code_buy_intra)   $sql .= natural_search('p.accountancy_code_buy_intra', $search_accountancy_code_buy_intra);
 if ($search_accountancy_code_buy_export)  $sql .= natural_search('p.accountancy_code_buy_export', $search_accountancy_code_buy_export);
-if(!empty($conf->global->PRODUCT_USE_UNITS) && $search_units) $sql .= natural_search('cu.rowid', $search_units);
+if (!empty($conf->global->PRODUCT_USE_UNITS) && $search_units) $sql .= natural_search('cu.rowid', $search_units);
 
 // Add where from extra fields
 include DOL_DOCUMENT_ROOT.'/core/tpl/extrafields_list_search_sql.tpl.php';