diff --git a/tap_core/src/receipt/received_receipt.rs b/tap_core/src/receipt/received_receipt.rs
index 82f439ad..77c22d54 100644
--- a/tap_core/src/receipt/received_receipt.rs
+++ b/tap_core/src/receipt/received_receipt.rs
@@ -120,6 +120,12 @@ impl ReceiptWithState<Checking> {
     }
 }
 
+impl ReceiptWithState<Failed> {
+    pub fn error(self) -> ReceiptError {
+        self._state.error
+    }
+}
+
 impl<S> ReceiptWithState<S>
 where
     S: ReceiptState,