diff --git a/seafile-ldap.py b/seafile-ldap.py
index 078ad4f..b2c7797 100644
--- a/seafile-ldap.py
+++ b/seafile-ldap.py
@@ -96,7 +96,7 @@ seafileURL = ccnetConfig['General']['SERVICE_URL']
 # DB config
 dbEngine = config['Database']['ENGINE']
 dbHost = config['Database']['HOST']
-dbPort = config['Database']['PORT']
+dbPort = config['Database'].getint('PORT')
 dbUser = config['Database']['USER']
 dbPassword = config['Database']['PASSWD']
 dbName = config['Database']['DB']