diff --git a/seahub/api2/views.py b/seahub/api2/views.py
index c9bfcf22f3..e9d338fa72 100644
--- a/seahub/api2/views.py
+++ b/seahub/api2/views.py
@@ -3166,8 +3166,7 @@ class GroupRepo(APIView):
         group_id = group.id
 
         if not group.is_staff and not seafile_api.is_repo_owner(username, repo_id):
-            return api_error(status.HTTP_403_FORBIDDEN,
-                             'You do not have permission to delete repo.')
+            return api_error(status.HTTP_403_FORBIDDEN, 'Permission denied.')
 
         if seaserv.is_org_group(group_id):
             org_id = seaserv.get_org_id_by_group(group_id)
diff --git a/seahub/templates/libraries.html b/seahub/templates/libraries.html
index 0cfdb82b46..e5b3b3c27a 100644
--- a/seahub/templates/libraries.html
+++ b/seahub/templates/libraries.html
@@ -173,7 +173,7 @@
         </table>
 
         <div class="empty-tips" style="margin-bottom:150px; display:none;">
-            <h2 class="alc">{% trans "No library is sharing to this group" %}</h2>
+            <h2 class="alc">{% trans "No library is shared to this group" %}</h2>
             <p>{% blocktrans %}You can share libraries by clicking the "New Library" button above or the "Share" icon on your libraries list.{% endblocktrans %}</p>
             <p>{% trans "Libraries shared as writable can be downloaded and synced by other group members. Read only libraries can only be downloaded, updates by others will not be uploaded." %}</p>
         </div>
diff --git a/static/scripts/app/views/group-repo.js b/static/scripts/app/views/group-repo.js
index e4b5f3ff2b..322b1756ac 100644
--- a/static/scripts/app/views/group-repo.js
+++ b/static/scripts/app/views/group-repo.js
@@ -44,13 +44,21 @@ define([
         },
 
         unshare: function() {
+            var lib_name = this.model.get('name');
             this.model.destroy({
                 wait: true,
-                success: function(model, rep) {
-                    Common.feedback(gettext('Success'), 'success', Common.SUCCESS_TIMOUT);
+                success: function() {
+                    var msg = gettext('Successfully unshared {placeholder}').replace('{placeholder}', '<span class="op-target">' + Common.HTMLescape(lib_name) + '</span>');
+                    Common.feedback(msg, 'success', Common.SUCCESS_TIMOUT);
                 },
-                error: function() {
-                    Common.feedback(gettext('Error'), 'error', Common.ERROR_TIMEOUT);
+                error: function(model, response) {
+                    var err;
+                    if (response.responseText) {
+                        err = $.parseJSON(response.responseText).error_msg;
+                    } else {
+                        err = gettext("Failed. Please check the network.");
+                    }
+                    Common.feedback(err, 'error');
                 }
             });
         },