diff --git a/htdocs/admin/security_file.php b/htdocs/admin/security_file.php
index 2669e741c6e..ea5ea2983fd 100644
--- a/htdocs/admin/security_file.php
+++ b/htdocs/admin/security_file.php
@@ -153,7 +153,7 @@ if (ini_get('safe_mode') && !empty($conf->global->MAIN_ANTIVIRUS_COMMAND))
 		dol_syslog("safe_mode is on, basedir is ".$basedir.", safe_mode_exec_dir is ".ini_get('safe_mode_exec_dir'), LOG_WARNING);
 	}
 }
-print '<input type="text" '.(defined('MAIN_ANTIVIRUS_COMMAND') ? 'disabled' : '').' name="MAIN_ANTIVIRUS_COMMAND" class="minwidth500imp" value="'.(!empty($conf->global->MAIN_ANTIVIRUS_COMMAND) ?dol_escape_htmltag($conf->global->MAIN_ANTIVIRUS_COMMAND) : '').'">';
+print '<input type="text" '.(defined('MAIN_ANTIVIRUS_COMMAND') ? 'disabled ' : '').'name="MAIN_ANTIVIRUS_COMMAND" class="minwidth500imp" value="'.(!empty($conf->global->MAIN_ANTIVIRUS_COMMAND) ?dol_escape_htmltag($conf->global->MAIN_ANTIVIRUS_COMMAND) : '').'">';
 if (defined('MAIN_ANTIVIRUS_COMMAND')) {
 	print '<br><span class="opacitymedium">'.$langs->trans("ValueIsForcedBySystem").'</span>';
 }
@@ -167,7 +167,7 @@ print '<td colspan="2">'.$langs->trans("AntiVirusParam").'<br>';
 print '<span class="opacitymedium">'.$langs->trans("AntiVirusParamExample").'</span>';
 print '</td>';
 print '<td>';
-print '<input type="text" name="MAIN_ANTIVIRUS_PARAM" class="minwidth500imp" value="'.(!empty($conf->global->MAIN_ANTIVIRUS_PARAM) ?dol_escape_htmltag($conf->global->MAIN_ANTIVIRUS_PARAM) : '').'">';
+print '<input type="text" '.(defined('MAIN_ANTIVIRUS_PARAM') ? 'disabled ' : '').'name="MAIN_ANTIVIRUS_PARAM" class="minwidth500imp" value="'.(!empty($conf->global->MAIN_ANTIVIRUS_PARAM) ?dol_escape_htmltag($conf->global->MAIN_ANTIVIRUS_PARAM) : '').'">';
 if (defined('MAIN_ANTIVIRUS_PARAM')) {
 	print '<br><span class="opacitymedium">'.$langs->trans("ValueIsForcedBySystem").'</span>';
 }