diff --git a/command/open_session.cpp b/command/open_session.cpp
index e3453f8..78fb9d0 100644
--- a/command/open_session.cpp
+++ b/command/open_session.cpp
@@ -108,7 +108,7 @@
     session->updateLastTransactionTime();
 
     // Session state is Setup in progress
-    session->state = session::State::SETUP_IN_PROGRESS;
+    session->state(static_cast<uint8_t>(session::State::setupInProgress));
     return outPayload;
 }