diff --git a/src/challenge-module/challenge-email.hpp b/src/challenge-module/challenge-email.hpp
index 4421bd3..b43a3de 100644
--- a/src/challenge-module/challenge-email.hpp
+++ b/src/challenge-module/challenge-email.hpp
@@ -63,13 +63,13 @@
 
   // For Client
   JsonSection
-  getRequirementForChallenge(int status, const std::string& challengeStatus) override;
+  getRequirementForChallenge(Status status, const std::string& challengeStatus) override;
 
   JsonSection
-  genChallengeRequestJson(int status, const std::string& challengeStatus, const JsonSection& params) override;
+  genChallengeRequestJson(Status status, const std::string& challengeStatus, const JsonSection& params) override;
 
   Block
-  genChallengeRequestTLV(int status, const std::string& challengeStatus, const JsonSection& params) override;
+  genChallengeRequestTLV(Status status, const std::string& challengeStatus, const JsonSection& params) override;
 
 PUBLIC_WITH_TESTS_ELSE_PRIVATE:
   static bool