diff --git a/mission/acs/RwHandler.h b/mission/acs/RwHandler.h
index a8903b81..87689fe6 100644
--- a/mission/acs/RwHandler.h
+++ b/mission/acs/RwHandler.h
@@ -59,6 +59,7 @@ class RwHandler : public DeviceHandlerBase {
   LocalPoolDataSetBase* getDataSetHandle(sid_t sid) override;
 
  private:
+  static const uint8_t INTERFACE_ID = CLASS_ID::RW_HANDLER;
   //! [EXPORT] : [COMMENT] Action Message with invalid speed was received. Valid speeds must be in
   //! the range of [-65000; 1000] or [1000; 65000]
   static const ReturnValue_t INVALID_SPEED = MAKE_RETURN_CODE(0xA0);