diff --git a/lib/models/role.js b/lib/models/role.js
index 072b7a76..5e733b15 100644
--- a/lib/models/role.js
+++ b/lib/models/role.js
@@ -7,7 +7,7 @@ var AccessContext = require('./access-context').AccessContext;
 
 // Role model
 var RoleSchema = {
-  id: {type: String, id: true}, // Id
+  id: {type: String, id: true, generated: true}, // Id
   name: {type: String, required: true}, // The name of a role
   description: String, // Description
 
@@ -20,8 +20,8 @@ var RoleSchema = {
  * Map principals to roles
  */
 var RoleMappingSchema = {
-  id: {type: String, id: true}, // Id
-  roleId: String, // The role id
+  id: {type: String, id: true, generated: true}, // Id
+  // roleId: String, // The role id, to be injected by the belongsTo relation
   principalType: String, // The principal type, such as user, application, or role
   principalId: String // The principal id
 };