diff --git a/apps/user_ldap/lib/User/User.php b/apps/user_ldap/lib/User/User.php
index 2ad395275d..c93d2a77d8 100644
--- a/apps/user_ldap/lib/User/User.php
+++ b/apps/user_ldap/lib/User/User.php
@@ -387,7 +387,7 @@ class User {
 		$lastChecked = $this->config->getUserValue($this->uid, 'user_ldap',
 			self::USER_PREFKEY_LASTREFRESH, 0);
 
-		if((time() - intval($lastChecked)) < $this->config->getAppValue('user_ldap', 'updateAttributesInterval', 86400) ) {
+		if((time() - intval($lastChecked)) < intval($this->config->getAppValue('user_ldap', 'updateAttributesInterval', 86400)) ) {
 			return false;
 		}
 		return  true;