diff --git a/seafile-ldap.py b/seafile-ldap.py
index 0e53b47..54620c0 100644
--- a/seafile-ldap.py
+++ b/seafile-ldap.py
@@ -255,9 +255,15 @@ for ldapGroup in ldapGroups:
     searchSeafileGroup = request('admin/search-group/?query={0}'.format(ldapGroup.name), seafileURL, seafileToken)['response']['group_list']
     for seafileGroup in searchSeafileGroup:
         if seafileGroup['name'] == ldapGroup.name:
-            addMembertoSeafileGroup = request('admin/groups/{0}/members/'.format(seafileGroup['id']), seafileURL, seafileToken, "POST",  "email={0}".format(ldap.entries[0]['mail']), False)['response']
-            if addMembertoSeafileGroup['failed']['email'] == ldap.entries[0]['mail'] and addMembertoSeafileGroup['failed']['error_msg'].endswith(" is already a group member."):
-                logger.debug("User {0} is already member of Seafile Group {1}".format(ldap.entries[0]['mail'], seafileGroup['name']))
+            for ldapGroupMember in ldapGroup.member:
+                logger.debug("Searching for LDAP user {0}".format(ldapGroupMember))
+                ldap.search(ldapBase, '(&(distinguishedName={0})(mail=*)(!(userAccountControl:1.2.840.113556.1.4.803:=2))({1}))'.format(ldapGroupMember, ldapFilter), attributes=['mail'])
+                count = len(ldap.entries)
+                logger.debug("Found {0} LDAP user.".format(count))
+                if count == 1:
+                    addMembertoSeafileGroup = request('admin/groups/{0}/members/'.format(seafileGroup['id']), seafileURL, seafileToken, "POST",  "email={0}".format(ldap.entries[0]['mail']), False)['response']
+                        if addMembertoSeafileGroup['failed']['email'] == ldap.entries[0]['mail'] and addMembertoSeafileGroup['failed']['error_msg'].endswith(" is already a group member."):
+                            logger.debug("User {0} is already member of Seafile Group {1}".format(ldap.entries[0]['mail'], seafileGroup['name']))
         
         
             #seafileGroupMembers = request('admin/groups/{0}/members/'.format(seafileGroup['id']), seafileURL, seafileToken)['response']['members']