diff --git a/seahub/templates/sysadmin/sys_invitations_admin.html b/seahub/templates/sysadmin/sys_invitations_admin.html
index 477e392de9..a189d97c13 100644
--- a/seahub/templates/sysadmin/sys_invitations_admin.html
+++ b/seahub/templates/sysadmin/sys_invitations_admin.html
@@ -12,8 +12,9 @@
         <th width="25%">{% trans "Inviter" %}</th>
         <th width="25%">{% trans "Accepter" %}</th>
         <th width="10%">{% trans "Type" %}</th>
-        <th width="20%">{% trans "Invited at" %}</th>
-        <th width="20%">{% trans "Accepted at" %}</th>
+        <th width="16%">{% trans "Invited at" %}</th>
+        <th width="16%">{% trans "Accepted at" %}</th>
+        <th width="8%"></th>
     </tr>
     {% for invitation in invitations %}
     <tr>
@@ -30,6 +31,7 @@
         {% else %}
         <td>--</td>
         {% endif %}
+        <td><a class="op vh rm-link" href="#" data-id="{{invitation.pk}}">{% trans "Delete" %}</a></td>
     </tr>
     {% endfor %}
 </table>
@@ -44,5 +46,21 @@
 
 {% block extra_script %}
 <script type="text/javascript">
+$('.rm-link').click(function() {
+    var _this = $(this);
+    $.ajax({
+        url: '{% url 'sys_invitation_remove' %}',
+        type: 'POST',
+        data: {'inv_id': _this.attr('data-id')},
+        cache: false,
+        dataType: 'json',
+        beforeSend: prepareCSRFToken,
+        success: function() {
+            _this.closest('tr').remove();
+        },
+        error: ajaxErrorHandler
+    });
+    return false;
+});
 </script>
 {% endblock %}
diff --git a/seahub/urls.py b/seahub/urls.py
index ed39134483..99e92d3f90 100644
--- a/seahub/urls.py
+++ b/seahub/urls.py
@@ -348,6 +348,7 @@ urlpatterns = patterns(
     url(r'^sys/uploadlink/remove/$', sys_upload_link_remove, name='sys_upload_link_remove'),
     url(r'^sys/notificationadmin/', notification_list, name='notification_list'),
     url(r'^sys/invitationadmin/$', sys_invitation_admin, name='sys_invitation_admin'),
+    url(r'^sys/invitationadmin/remove/$', sys_invitation_remove, name='sys_invitation_remove'),
     url(r'^sys/sudo/', sys_sudo_mode, name='sys_sudo_mode'),
     url(r'^sys/check-license/', sys_check_license, name='sys_check_license'),
     url(r'^useradmin/add/$', user_add, name="user_add"),
diff --git a/seahub/views/sysadmin.py b/seahub/views/sysadmin.py
index 82574ab7b3..3677e43bcd 100644
--- a/seahub/views/sysadmin.py
+++ b/seahub/views/sysadmin.py
@@ -16,7 +16,7 @@ from django.conf import settings as dj_settings
 from django.core.urlresolvers import reverse
 from django.contrib import messages
 from django.http import HttpResponse, Http404, HttpResponseRedirect, HttpResponseNotAllowed
-from django.shortcuts import render_to_response
+from django.shortcuts import render_to_response, get_object_or_404
 from django.template import RequestContext
 from django.utils import timezone
 from django.utils.translation import ugettext as _
@@ -2316,6 +2316,27 @@ def sys_invitation_admin(request):
         },
         context_instance=RequestContext(request))
 
+@login_required
+@sys_staff_required
+def sys_invitation_remove(request):
+    """Delete an invitation.
+    """
+    ct = 'application/json; charset=utf-8'
+    result = {}
+
+    if not ENABLE_GUEST_INVITATION:
+        return HttpResponse(json.dumps({}), status=400, content_type=ct)
+
+    inv_id = request.POST.get('inv_id', '')
+    if not inv_id:
+        result = {'error': "Argument missing"}
+        return HttpResponse(json.dumps(result), status=400, content_type=ct)
+
+    inv = get_object_or_404(Invitation, pk=inv_id)
+    inv.delete()
+
+    return HttpResponse(json.dumps({'success': True}), content_type=ct)
+
 @login_required
 @sys_staff_required
 def sys_terms_admin(request):