diff --git a/htdocs/admin/system/security.php b/htdocs/admin/system/security.php
index 89d3a3fe251..cb28b20195d 100644
--- a/htdocs/admin/system/security.php
+++ b/htdocs/admin/system/security.php
@@ -278,7 +278,7 @@ print '<br>';
 
 print '<strong>'.$langs->trans("AntivirusEnabledOnUpload").'</strong>: ';
 print empty($conf->global->MAIN_ANTIVIRUS_COMMAND) ? '' : img_picto('', 'tick').' ';
-print yn(!empty($conf->global->MAIN_ANTIVIRUS_COMMAND) ? 1 : 0);
+print yn(empty($conf->global->MAIN_ANTIVIRUS_COMMAND) ? 0 : 1);
 if (!empty($conf->global->MAIN_ANTIVIRUS_COMMAND)) {
 	print ' &nbsp; - '.$conf->global->MAIN_ANTIVIRUS_COMMAND;
 	if (defined('MAIN_ANTIVIRUS_COMMAND')) {