diff --git a/src/Orchard.Web/Modules/Orchard.Roles/Activities/RoleEventActivity.cs b/src/Orchard.Web/Modules/Orchard.Roles/Activities/RoleEventActivity.cs
index ed2305343..d48415838 100644
--- a/src/Orchard.Web/Modules/Orchard.Roles/Activities/RoleEventActivity.cs
+++ b/src/Orchard.Web/Modules/Orchard.Roles/Activities/RoleEventActivity.cs
@@ -1,9 +1,11 @@
 using System.Collections.Generic;
+using Orchard.Environment.Extensions;
 using Orchard.Localization;
 using Orchard.Workflows.Models;
 using Orchard.Workflows.Services;
 
 namespace Orchard.Roles.Activities {
+    [OrchardFeature("Orchard.Roles.Workflows")]
     public class RoleEventActivity : Event {
         public Localizer T { get; set; }
 
diff --git a/src/Orchard.Web/Modules/Orchard.Roles/Events/RoleEventHandler.cs b/src/Orchard.Web/Modules/Orchard.Roles/Events/RoleEventHandler.cs
index 86634d9b2..6dd6af0a8 100644
--- a/src/Orchard.Web/Modules/Orchard.Roles/Events/RoleEventHandler.cs
+++ b/src/Orchard.Web/Modules/Orchard.Roles/Events/RoleEventHandler.cs
@@ -1,7 +1,9 @@
 using System.Collections.Generic;
+using Orchard.Environment.Extensions;
 using Orchard.Workflows.Services;
 
 namespace Orchard.Roles.Events {
+    [OrchardFeature("Orchard.Roles.Workflows")]
     public class RoleEventHandler : IRoleEventHandler {
         private readonly IWorkflowManager _workflowManager;