diff --git a/src/protocol-detail/challenge.cpp b/src/protocol-detail/challenge.cpp
index f1fed27..273e631 100644
--- a/src/protocol-detail/challenge.cpp
+++ b/src/protocol-detail/challenge.cpp
@@ -33,7 +33,7 @@
   makeStringBlock(tlv_challenge_status, request.m_challengeStatus);
   makeNonNegativeIntegerBlock(tlv_remaining_tries, request.m_remainingTries);
   makeNonNegativeIntegerBlock(tlv_remaining_time, request.m_remainingTime);
-  response.parse();
+  response.encode();
   return response;
 }