diff --git a/cpp/controllers/controller.cpp b/cpp/controllers/controller.cpp
index f52384d5..6a9924fc 100644
--- a/cpp/controllers/controller.cpp
+++ b/cpp/controllers/controller.cpp
@@ -357,6 +357,8 @@ void Controller::Send()
         return;
     }
 
+    // All data have been transferred
+
     switch (GetPhase()) {
     case bus_phase::msgin:
         ProcessEndOfMessage();