diff --git a/DAPI.hpp b/DAPI.hpp
index 42a1d7a1..2b5a3906 100644
--- a/DAPI.hpp
+++ b/DAPI.hpp
@@ -94,6 +94,7 @@ enum CallbackReason
     ReceiveReason,
     ConfigurationReason,
     FetchReason,
+    StopReason,
     BindReason,
     UnbindReason,
     InterruptReason,