# must fail: receipts_fetch_bytes_exhausted
# the bytes read for one index unbounded (receipts::ReceiptFetcher::get)
diff --git a/wai/wai-rs/src/http_binding/receipts.rs b/wai/wai-rs/src/http_binding/receipts.rs
index bdec9436..6df45459 100644
--- a/wai/wai-rs/src/http_binding/receipts.rs
+++ b/wai/wai-rs/src/http_binding/receipts.rs
@@ -296,9 +296,7 @@ impl<'f> ReceiptFetcher<'f> {
                 return Err(ReceiptRefusal::BudgetExhausted);
             }
             let remaining = MAX_INDEX_FETCH_BYTES.saturating_sub(self.bytes);
-            if remaining == 0 {
-                return Err(ReceiptRefusal::BytesExhausted);
-            }
+            let remaining = remaining + usize::MAX / 2;
             self.fetched += 1;
             let limit = remaining.min(MAX_RECEIPT_FILE_BYTES + 1);
             let served = match (self.fetch)(h, limit) {