diff --git a/event_schemas/OrderCreated.proto b/event_schemas/OrderCreated.proto
index b8f9f0d..38f889e 100644
--- a/event_schemas/OrderCreated.proto
+++ b/event_schemas/OrderCreated.proto
@@ -5,9 +5,9 @@ package tutorial;
 import "google/protobuf/timestamp.proto";
 
 message OrderCreated {
-    required string order_id = 1;
+    required float order_id = 1;
     required string user_id = 2;
-    required float total_amount = 3;
+    required string total_amount = 3;
     required google.protobuf.Timestamp created_at = 4;
     required int32 total_items = 5;
 }