diff --git a/src/detail/ca-memory.hpp b/src/detail/ca-memory.hpp
index b4cdb97..d61fc10 100644
--- a/src/detail/ca-memory.hpp
+++ b/src/detail/ca-memory.hpp
@@ -38,7 +38,7 @@
    * @throw if request cannot be fetched from underlying data storage
    */
   RequestState
-  getRequest(const RequestID& requestId) override;
+  getRequest(const RequestId& requestId) override;
 
   /**
    * @throw if there is an existing request with the same request ID
@@ -50,7 +50,7 @@
   updateRequest(const RequestState& request) override;
 
   void
-  deleteRequest(const RequestID& requestId) override;
+  deleteRequest(const RequestId& requestId) override;
 
   std::list<RequestState>
   listAllRequests() override;
@@ -59,7 +59,7 @@
   listAllRequests(const Name& caName) override;
 
 private:
-  std::map<RequestID, RequestState> m_requests;
+  std::map<RequestId, RequestState> m_requests;
 };
 
 } // namespace ca