diff --git a/common/models/role-mapping.json b/common/models/role-mapping.json
index 23c9d8ab..d59ef551 100644
--- a/common/models/role-mapping.json
+++ b/common/models/role-mapping.json
@@ -1,6 +1,7 @@
 {
   "name": "RoleMapping",
   "description": "Map principals to roles",
+  "strictObjectIDCoercion": true,
   "properties": {
     "id": {
       "type": "string",