diff --git a/seahub/contacts/views.py b/seahub/contacts/views.py
index 1951365095..9adf8c1f87 100644
--- a/seahub/contacts/views.py
+++ b/seahub/contacts/views.py
@@ -12,7 +12,7 @@ from django.contrib import messages
 from django.utils.translation import ugettext as _
 
 from models import Contact, ContactAddForm, ContactEditForm
-from seahub.auth.decorators import login_required
+from seahub.auth.decorators import login_required, login_required_ajax
 from seahub.base.decorators import user_mods_check
 from seahub.profile.models import Profile
 from seahub.utils import render_error, is_valid_email
@@ -49,7 +49,7 @@ def contact_list(request):
         # 'edit_form': edit_form,
         }, context_instance=RequestContext(request))
 
-@login_required
+@login_required_ajax
 def contact_add(request):
     """
     Handle ajax post to add a contact.
@@ -86,7 +86,7 @@ def contact_add(request):
         messages.error(request, _(u"Failed to add %s to contacts.") % contact_email)
         return HttpResponse(json.dumps(result), status=500, content_type=content_type)
 
-@login_required
+@login_required_ajax
 def contact_edit(request):
     """
     Ajax post to edit contact info.
diff --git a/seahub/profile/templates/profile/user_profile.html b/seahub/profile/templates/profile/user_profile.html
index df4211da3e..00e518fffc 100644
--- a/seahub/profile/templates/profile/user_profile.html
+++ b/seahub/profile/templates/profile/user_profile.html
@@ -9,7 +9,7 @@
     border-radius:3px;
     text-align:center;
 }
-.add-to-contacts, #send-msg {
+#send-msg {
     margin-top:8px;
 }
 </style>
diff --git a/static/scripts/app/router.js b/static/scripts/app/router.js
index 8b5dcc64bc..2b32f5c272 100644
--- a/static/scripts/app/router.js
+++ b/static/scripts/app/router.js
@@ -35,7 +35,6 @@ define([
             Common.prepareApiCsrf();
             Common.initAccountPopup();
             Common.initNoticePopup();
-            Common.getContacts();
 
             this.dirView = new DirView();
 
diff --git a/static/scripts/common.js b/static/scripts/common.js
index 2a361cbefa..02b556ec8a 100644
--- a/static/scripts/common.js
+++ b/static/scripts/common.js
@@ -468,16 +468,6 @@ define([
             });
         },
 
-        // get contacts for 'lib/dir/file share'
-        getContacts: function () {
-            this.ajaxGet({
-                'get_url': this.getUrl({name: 'get_user_contacts'}),
-                'after_op_success': function (data) {
-                    app.pageOptions.contacts = data["contacts"];
-                }
-            });
-        },
-
         closeTopNoticeBar: function () {
             if (!app.pageOptions.cur_note) {
                 return false;
@@ -506,14 +496,16 @@ define([
         contactInputOptionsForSelect2: function() {
             var _this = this;
             return {
-                placeholder: gettext("Enter emails or select contacts"),
+                placeholder: gettext("Search users"),
 
                 // with 'tags', the user can directly enter, not just select
                 // tags need `<input type="hidden" />`, not `<select>`
-                tags: true,
+                tags: [],
 
                 tokenSeparators: [",", " "],
 
+                minimumInputLength: 1, // input at least 1 character
+
                 ajax: {
                     url: _this.getUrl({name: 'search_user'}),
                     dataType: 'json',