From 82b37a514cc350bc7d0b6e92d2eef34b37db4b09 Mon Sep 17 00:00:00 2001
From: AXeL-dev <contact.axel.dev@gmail.com>
Date: Sat, 1 Jun 2019 16:27:06 +0000
Subject: [PATCH] Fixed  empty verification (0 might be considered as empty
 also, so its better to compare string value with '')

---
 htdocs/core/class/html.form.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 054a8ef2b1d..63246fb0287 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1915,7 +1915,7 @@ class Form
 				unset($producttmpselect);
 			}
 			// handle case where product or service module is disabled + no filter specified
-			if (empty($filtertype))
+			if ($filtertype == '')
 			{
 				if (empty($conf->product->enabled)) { // when product module is disabled, show services only
 					$filtertype = 1;