diff --git a/server/lib/classes/cron.d/100-monitor_iptables.inc.php b/server/lib/classes/cron.d/100-monitor_iptables.inc.php
index 1ad11d9ecccdcbf690c3337524221aee62b431f8..2bf9404735319e5290d8d9f6b6501e488b3d5506 100644
--- a/server/lib/classes/cron.d/100-monitor_iptables.inc.php
+++ b/server/lib/classes/cron.d/100-monitor_iptables.inc.php
@@ -67,7 +67,7 @@ class cronjob_monitor_iptables extends cronjob {
 		$type = 'iptables_rules';
 
 		/* This monitoring is only available if fail2ban is installed */
-		system('which iptables', $retval); // Debian, Ubuntu, Fedora
+		system('which iptables > /dev/null', $retval); // Debian, Ubuntu, Fedora
 		if ($retval === 0) {
 			/*  Get the data of the log */
 			$data['output'] = '<h2>iptables -S (ipv4)</h2>'.shell_exec('iptables -S 2>/dev/null');
@@ -83,7 +83,7 @@ class cronjob_monitor_iptables extends cronjob {
 
 
 		/* This monitoring is only available if fail2ban is installed */
-		system('which ip6tables', $retval); // Debian, Ubuntu, Fedora
+		system('which ip6tables > /dev/null', $retval); // Debian, Ubuntu, Fedora
 		if ($retval === 0) {
 			/*  Get the data of the log */
 			$data['output'] .= '<br><h2>ip6tables -S (ipv6)</h2>'.shell_exec('ip6tables -S 2>/dev/null');
diff --git a/server/plugins-available/backup_plugin.inc.php b/server/plugins-available/backup_plugin.inc.php
index 53b8d6d28823c1af06860e0b3bfec97f1a14a120..ffbc5a6b795a7917f8b9109618efd1b509e35681 100644
--- a/server/plugins-available/backup_plugin.inc.php
+++ b/server/plugins-available/backup_plugin.inc.php
@@ -322,4 +322,3 @@ class backup_plugin {
 } // end class
 
 ?>
-