diff --git a/src/challenge-module/challenge-pin.cpp b/src/challenge-module/challenge-pin.cpp
index caad97d..4853eed 100644
--- a/src/challenge-module/challenge-pin.cpp
+++ b/src/challenge-module/challenge-pin.cpp
@@ -41,7 +41,7 @@
 
 // For CA
 std::tuple<ErrorCode, std::string>
-ChallengePin::handleChallengeRequest(const Block& params, CertificateRequest& request)
+ChallengePin::handleChallengeRequest(const Block& params, RequestState& request)
 {
   params.parse();
   auto currentTime = time::system_clock::now();