diff --git a/htdocs/core/lib/security.lib.php b/htdocs/core/lib/security.lib.php
index 481339916a3..1a8045df014 100644
--- a/htdocs/core/lib/security.lib.php
+++ b/htdocs/core/lib/security.lib.php
@@ -122,7 +122,7 @@ function dol_hash($chain, $type = '0')
 	}
 
 	// Salt value
-	if (! empty($conf->global->MAIN_SECURITY_SALT) && ($type != '4' || $type !== 'md5openldap')) $chain = $conf->global->MAIN_SECURITY_SALT.$chain;
+	if (! empty($conf->global->MAIN_SECURITY_SALT) && $type != '4' && $type !== 'md5openldap') $chain = $conf->global->MAIN_SECURITY_SALT.$chain;
 
 	if ($type == '1' || $type == 'sha1') return sha1($chain);
 	elseif ($type == '2' || $type == 'sha1md5') return sha1(md5($chain));