From b2c27cc8564cf404d1108649e8e8cbf4838bff50 Mon Sep 17 00:00:00 2001
From: Laurent Destailleur <eldy@destailleur.fr>
Date: Thu, 22 Dec 2022 02:11:05 +0100
Subject: [PATCH] FIX Duplicate test

---
 htdocs/accountancy/admin/categories_list.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/htdocs/accountancy/admin/categories_list.php b/htdocs/accountancy/admin/categories_list.php
index 3a6664b8b44..a33616fc09e 100644
--- a/htdocs/accountancy/admin/categories_list.php
+++ b/htdocs/accountancy/admin/categories_list.php
@@ -190,7 +190,7 @@ if (GETPOST('actionadd', 'alpha') || GETPOST('actionmodify', 'alpha')) {
 			setEventMessages($langs->transnoentities('ErrorCodeCantContainZero'), null, 'errors');
 		}
 	}
-	if (!is_numeric(GETPOST('position', 'alpha'))) {
+	if (GETPOST('position') && !is_numeric(GETPOST('position', 'alpha'))) {
 		$langs->loadLangs(array("errors"));
 		$ok = 0;
 		setEventMessages($langs->transnoentities('ErrorFieldMustBeANumeric', $langs->transnoentities("Position")), null, 'errors');