diff --git a/seahub/base/accounts.py b/seahub/base/accounts.py
index 41a1f8974b..bf6e2743aa 100644
--- a/seahub/base/accounts.py
+++ b/seahub/base/accounts.py
@@ -799,7 +799,7 @@ class CustomLDAPBackend(object):
         return user
 
     def authenticate(self, ldap_user=None, password=None):
-        if not is_pro_version() or not ENABLE_LDAP:
+        if not ENABLE_LDAP:
             return
 
         admin_bind_conn = ldap.initialize(LDAP_SERVER_URL)