diff --git a/src/Orchard/Security/Permissions/Permission.cs b/src/Orchard/Security/Permissions/Permission.cs
index 4ed0b0100..8ff133f2d 100644
--- a/src/Orchard/Security/Permissions/Permission.cs
+++ b/src/Orchard/Security/Permissions/Permission.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace Orchard.Security.Permissions {
     public class Permission {
@@ -7,10 +8,12 @@ namespace Orchard.Security.Permissions {
         public string Category { get; set; }
 
         public IEnumerable<Permission> ImpliedBy { get; set; }
-        public bool RequiresOwnership { get; set; }
 
         public static Permission Named(string name) {
             return new Permission { Name = name };
         }
+
+        [Obsolete("This property is not used anywhere, so it shouldn't be referenced.")]
+        public bool RequiresOwnership { get; set; }
     }
 }
\ No newline at end of file