diff --git a/47.md b/47.md
index 5581beeb..62fdec18 100644
--- a/47.md
+++ b/47.md
@@ -395,7 +395,7 @@ Response:
     "result": {
         "remaining_budget_msats": 10000,
         "total_budget_msats": 100000,
-        "renews_at": 1693876973, // timestamp in seconds since epoch
+        "renews_at": 1693876973, // timestamp in seconds since epoch, optional. If not provided, the budget does not renew.
     }
 }
 ```