diff --git a/05.md b/05.md
index 1c47f3d..bbf6df1 100644
--- a/05.md
+++ b/05.md
@@ -28,7 +28,11 @@ The wallet `Alice` includes the following `PostMeltQuoteBolt11Request` data in i
 {
   "request": <str>,
   "unit": <str_enum["sat"]>,
-  "amount": <int|null>
+  "options": {
+    "amountless": {
+      "amount": <int>
+    }
+  } // Optional
 }
 ```