diff --git a/organizations/views.py b/organizations/views.py
index 4571c261e8..64168cd1a9 100644
--- a/organizations/views.py
+++ b/organizations/views.py
@@ -16,7 +16,7 @@ from seaserv import ccnet_threaded_rpc, seafserv_threaded_rpc, \
     get_orgs_by_user, get_org_repos, \
     get_org_by_url_prefix, create_org, get_user_current_org, add_org_user, \
     get_ccnetuser, remove_org_user, get_org_groups, is_valid_filename, \
-    create_org_repo, is_org_group
+    create_org_repo, get_org_id_by_group
 
 from decorators import org_staff_required
 from forms import OrgCreateForm
@@ -360,7 +360,7 @@ def org_group_remove(request, url_prefix, group_id):
         return HttpResponseRedirect(next)
 
     # Check whether is the org group.
-    org_id = is_org_group(group_id_int)
+    org_id = get_org_id_by_group(group_id_int)
     if request.user.org['org_id'] != org_id:
         return render_permission_error(request, '该小组不属于当前团体')
 
diff --git a/thirdpart/seaserv/__init__.py b/thirdpart/seaserv/__init__.py
index b09e4a56b1..ff0ea2e851 100644
--- a/thirdpart/seaserv/__init__.py
+++ b/thirdpart/seaserv/__init__.py
@@ -5,7 +5,7 @@ from service import ccnet_rpc, monitor_rpc, seafserv_rpc, \
 from service import send_command
 from service import get_ccnetuser, get_emailusers
 from service import get_org_groups, get_personal_groups, get_group_repoids, \
-    check_group_staff, remove_group_user, get_group, is_org_group
+    check_group_staff, remove_group_user, get_group, get_org_id_by_group
 from service import get_repos, get_repo, get_commits, get_branches, \
     get_org_repos, is_repo_owner, create_org_repo
 from service import get_binding_peerids, is_valid_filename
diff --git a/thirdpart/seaserv/service.py b/thirdpart/seaserv/service.py
index 2a272d7280..b9f8c6592f 100644
--- a/thirdpart/seaserv/service.py
+++ b/thirdpart/seaserv/service.py
@@ -169,16 +169,11 @@ def get_personal_groups(email):
             
     return personal_groups
 
-def is_org_group(group_id):
-    """
-    If a group is org group, returns org id which is > 0.
-    Arguments:
-    - `group_id`:
-    """
+def get_org_id_by_group(group_id):
     try:
-        org_id = ccnet_threaded_rpc.is_org_group(group_id)
+        org_id = ccnet_threaded_rpc.get_org_id_by_group(group_id)
     except SearpcError:
-        org_id = 0
+        org_id = -1
     return org_id
 
 def create_org(org_name, url_prefix, username):