diff --git a/apps/authentication/backend/infra/permission/permission_handler.py b/apps/authentication/backend/infra/permission/permission_handler.py
index 272409e..57f41ec 100644
--- a/apps/authentication/backend/infra/permission/permission_handler.py
+++ b/apps/authentication/backend/infra/permission/permission_handler.py
@@ -150,8 +150,7 @@ class PermissionHandler:
         query = {}
         if permission_id:
             try:
-                ObjectId(permission_id)  # Validate ObjectId format
-                query["_id"] = permission_id  # Use MongoDB's _id field directly
+                query["_id"] = ObjectId(permission_id)  # Convert string to ObjectId for MongoDB
             except Exception:
                 raise RequestValidationError("Invalid permission_id format. Must be a valid ObjectId.")
         if permission_key:
diff --git a/apps/authentication/backend/infra/permission/role_handler.py b/apps/authentication/backend/infra/permission/role_handler.py
index 80dce84..08d5d83 100644
--- a/apps/authentication/backend/infra/permission/role_handler.py
+++ b/apps/authentication/backend/infra/permission/role_handler.py
@@ -144,8 +144,7 @@ class RoleHandler:
         query = {}
         if role_id:
             try:
-                ObjectId(role_id)  # Validate ObjectId format
-                query["_id"] = role_id  # Use MongoDB's _id field directly
+                query["_id"] = ObjectId(role_id)  # Convert string to ObjectId for MongoDB
             except Exception:
                 raise RequestValidationError("Invalid role_id format. Must be a valid ObjectId.")
         if role_key: