diff --git a/frontend/src/components/common/account.js b/frontend/src/components/common/account.js
index 379e3d52250..7afc6c23f35 100644
--- a/frontend/src/components/common/account.js
+++ b/frontend/src/components/common/account.js
@@ -3,7 +3,7 @@ import PropTypes from 'prop-types';
 import ReactDOM from 'react-dom';
 import { Utils } from '../../utils/utils';
 import { seafileAPI } from '../../utils/seafile-api';
-import { siteRoot, gettext, appAvatarURL, enableSSOToThirdpartWebsite } from '../../utils/constants';
+import { siteRoot, isPro, gettext, appAvatarURL, enableSSOToThirdpartWebsite } from '../../utils/constants';
 import toaster from '../toast';
 
 const {
@@ -131,7 +131,7 @@ class Account extends Component {
           url: `${siteRoot}org/info/`,
           text: gettext('Organization Admin')
         };
-      } else if (isInstAdmin) {
+      } else if (isPro && isInstAdmin) {
         data = {
           url: `${siteRoot}inst/useradmin/`,
           text: gettext('Institution Admin')
diff --git a/frontend/src/pages/sys-admin/side-panel.js b/frontend/src/pages/sys-admin/side-panel.js
index e76452b0c97..47ce2b7bb3d 100644
--- a/frontend/src/pages/sys-admin/side-panel.js
+++ b/frontend/src/pages/sys-admin/side-panel.js
@@ -139,7 +139,7 @@ class SidePanel extends React.Component {
                     </Link>
                   </li>
                 }
-                {multiInstitution && otherPermission &&
+                {isPro && multiInstitution && otherPermission &&
                   <li className="nav-item">
                     <Link
                       className={`nav-link ellipsis ${this.getActiveClass('institutions')}`}
diff --git a/seahub/api2/endpoints/admin/institution_users.py b/seahub/api2/endpoints/admin/institution_users.py
index 87dc1863578..ef35d8f271d 100644
--- a/seahub/api2/endpoints/admin/institution_users.py
+++ b/seahub/api2/endpoints/admin/institution_users.py
@@ -7,10 +7,9 @@
 from rest_framework.views import APIView
 from django.utils.translation import gettext as _
 
-from seaserv import seafile_api, ccnet_api
-
 from seahub.api2.authentication import TokenAuthentication
 from seahub.api2.throttling import UserRateThrottle
+from seahub.api2.permissions import IsProVersion
 from seahub.api2.utils import api_error
 
 from seahub.base.templatetags.seahub_tags import email2nickname, email2contact_email
@@ -54,7 +53,7 @@ def get_institution_user_info(user_obj, institution, is_check_admin=True):
 class AdminInstitutionUsers(APIView):
 
     authentication_classes = (TokenAuthentication, SessionAuthentication)
-    permission_classes = (IsAdminUser, )
+    permission_classes = (IsAdminUser, IsProVersion)
     throttle_classes = (UserRateThrottle, )
 
     def get(self, request, institution_id):
@@ -185,7 +184,7 @@ def post(self, request, institution_id):
 class AdminInstitutionUser(APIView):
 
     authentication_classes = (TokenAuthentication, SessionAuthentication)
-    permission_classes = (IsAdminUser, )
+    permission_classes = (IsAdminUser, IsProVersion)
     throttle_classes = (UserRateThrottle, )
 
     def put(self, request, institution_id, email):
diff --git a/seahub/api2/endpoints/admin/institutions.py b/seahub/api2/endpoints/admin/institutions.py
index 677bcd3ec68..91d01455e18 100644
--- a/seahub/api2/endpoints/admin/institutions.py
+++ b/seahub/api2/endpoints/admin/institutions.py
@@ -6,16 +6,15 @@
 from rest_framework.response import Response
 from rest_framework.views import APIView
 
-from seaserv import seafile_api, ccnet_api
-
 from seahub.api2.authentication import TokenAuthentication
 from seahub.api2.throttling import UserRateThrottle
+from seahub.api2.permissions import IsProVersion
 from seahub.api2.utils import api_error
 
 from seahub.profile.models import Profile
 from seahub.utils.file_size import get_file_size_unit
 from seahub.utils.timeutils import datetime_to_isoformat_timestr
-from seahub.institutions.models import Institution, InstitutionQuota, InstitutionAdmin
+from seahub.institutions.models import Institution, InstitutionQuota
 from seahub.institutions.utils import get_institution_space_usage
 from seahub.signals import institution_deleted
 
@@ -25,7 +24,7 @@
 class AdminInstitutions(APIView):
 
     authentication_classes = (TokenAuthentication, SessionAuthentication)
-    permission_classes = (IsAdminUser, )
+    permission_classes = (IsAdminUser, IsProVersion)
     throttle_classes = (UserRateThrottle, )
 
     def get(self, request):
@@ -91,7 +90,7 @@ def post(self, request):
 class AdminInstitution(APIView):
 
     authentication_classes = (TokenAuthentication, SessionAuthentication)
-    permission_classes = (IsAdminUser, )
+    permission_classes = (IsAdminUser, IsProVersion)
     throttle_classes = (UserRateThrottle, )
 
     def get(self, request, institution_id):