diff --git a/src/blackmisc/genericdbusinterface.h b/src/blackmisc/genericdbusinterface.h
index 072499b9e..517575ce3 100644
--- a/src/blackmisc/genericdbusinterface.h
+++ b/src/blackmisc/genericdbusinterface.h
@@ -1,3 +1,14 @@
+/* Copyright (C) 2013
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
 #ifndef BLACKMISC_GENERICDBUSINTERFACE_H
 #define BLACKMISC_GENERICDBUSINTERFACE_H
 
@@ -5,6 +16,15 @@
 #include <QDBusPendingCall>
 #include <QDBusPendingReply>
 #include <QObject>
+#include <QMetaMethod>
+
+#ifndef Q_MOC_RUN
+/*!
+ * Any signals tagged with this macro will be ignored by BlackMisc::CGenericDBusInterface::relayParentSignals().
+ * \see QMetaMethod::tag
+ */
+#define BLACK_NO_RELAY
+#endif
 
 namespace BlackMisc
 {
@@ -23,6 +43,25 @@ namespace BlackMisc
             QDBusAbstractInterface(serviceName, path, interfaceName.toUtf8().constData(), connection, parent)
         {  }
 
+        //! For each signal in parent, attempt to connect to it an interface signal of the same name.
+        //! \see BLACK_NO_RELAY
+        void relayParentSignals()
+        {
+            const QMetaObject *metaObject = this->parent()->metaObject();
+            const QMetaObject *superMetaObject = metaObject;
+            while (strcmp(superMetaObject->superClass()->className(), "QObject") != 0) { superMetaObject = superMetaObject->superClass(); }
+
+            for (int i = superMetaObject->methodOffset(), count = metaObject->methodCount(); i < count; ++i)
+            {
+                QMetaMethod method = metaObject->method(i);
+                if (method.methodType() != QMetaMethod::Signal) { continue; }
+                if (method.tag() && strcmp(method.tag(), "BLACK_NO_RELAY") == 0) { continue; }
+
+                this->connection().connect(this->service(), this->path(), this->interface(), method.name(), this->parent(),
+                    method.methodSignature().prepend("2")); // the reason for this "2" can be found in the definition of SIGNAL() macro
+            }
+        }
+
         //! Call DBus, no return value
         template <typename... Args>
         void callDBus(const QLatin1String &method, Args&&... args)
diff --git a/src/plugins/simulator/xplane/xbus_service_proxy.cpp b/src/plugins/simulator/xplane/xbus_service_proxy.cpp
index 2db961363..344ee9b39 100644
--- a/src/plugins/simulator/xplane/xbus_service_proxy.cpp
+++ b/src/plugins/simulator/xplane/xbus_service_proxy.cpp
@@ -17,21 +17,7 @@ namespace BlackSimPlugin
         CXBusServiceProxy::CXBusServiceProxy(QDBusConnection &connection, QObject *parent, bool dummy) : QObject(parent)
         {
             m_dbusInterface = new BlackMisc::CGenericDBusInterface(XBUS_SERVICE_SERVICENAME, ObjectPath(), InterfaceName(), connection, this);
-            if (! dummy) { relaySignals(); }
-        }
-
-        void CXBusServiceProxy::relaySignals()
-        {
-            // TODO can this be refactored into CGenericDBusInterface?
-            for (int i = 0, count = metaObject()->methodCount(); i < count; ++i)
-            {
-                auto method = metaObject()->method(i);
-                if (method.methodType() == QMetaMethod::Signal)
-                {
-                    m_dbusInterface->connection().connect(m_dbusInterface->service(), m_dbusInterface->path(), m_dbusInterface->interface(),
-                        method.name(), this, method.methodSignature().prepend("2"));
-                }
-            }
+            if (! dummy) { m_dbusInterface->relayParentSignals(); }
         }
 
         void CXBusServiceProxy::updateAirportsInRange()
diff --git a/src/plugins/simulator/xplane/xbus_service_proxy.h b/src/plugins/simulator/xplane/xbus_service_proxy.h
index 8c3cafaf4..313a528b2 100644
--- a/src/plugins/simulator/xplane/xbus_service_proxy.h
+++ b/src/plugins/simulator/xplane/xbus_service_proxy.h
@@ -56,8 +56,6 @@ namespace BlackSimPlugin
         private:
             BlackMisc::CGenericDBusInterface *m_dbusInterface = nullptr;
 
-            void relaySignals();
-
             // Returns a function object which can be passed to CGenericDBusInterface::callDBusAsync.
             template <typename T>
             std::function<void(QDBusPendingCallWatcher *)> setterCallback(T *obj)
diff --git a/src/plugins/simulator/xplane/xbus_traffic_proxy.cpp b/src/plugins/simulator/xplane/xbus_traffic_proxy.cpp
index ca7bac39e..ce4ee30d0 100644
--- a/src/plugins/simulator/xplane/xbus_traffic_proxy.cpp
+++ b/src/plugins/simulator/xplane/xbus_traffic_proxy.cpp
@@ -17,21 +17,7 @@ namespace BlackSimPlugin
         CXBusTrafficProxy::CXBusTrafficProxy(QDBusConnection &connection, QObject *parent, bool dummy) : QObject(parent)
         {
             m_dbusInterface = new BlackMisc::CGenericDBusInterface(XBUS_SERVICENAME, ObjectPath(), InterfaceName(), connection, this);
-            if (! dummy) { relaySignals(); }
-        }
-
-        void CXBusTrafficProxy::relaySignals()
-        {
-            // TODO can this be refactored into CGenericDBusInterface?
-            for (int i = 0, count = metaObject()->methodCount(); i < count; ++i)
-            {
-                auto method = metaObject()->method(i);
-                if (method.methodType() == QMetaMethod::Signal)
-                {
-                    m_dbusInterface->connection().connect(m_dbusInterface->service(), m_dbusInterface->path(), m_dbusInterface->interface(),
-                        method.name(), this, method.methodSignature().prepend("2"));
-                }
-            }
+            if (! dummy) { m_dbusInterface->relayParentSignals(); }
         }
 
         bool CXBusTrafficProxy::initialize()
diff --git a/src/plugins/simulator/xplane/xbus_traffic_proxy.h b/src/plugins/simulator/xplane/xbus_traffic_proxy.h
index 443ec6757..5fd5ec7a0 100644
--- a/src/plugins/simulator/xplane/xbus_traffic_proxy.h
+++ b/src/plugins/simulator/xplane/xbus_traffic_proxy.h
@@ -51,8 +51,6 @@ namespace BlackSimPlugin
         private:
             BlackMisc::CGenericDBusInterface *m_dbusInterface = nullptr;
 
-            void relaySignals();
-
         signals:
             //! \copydoc XBus::CTraffic::installedModelsUpdated
             void installedModelsUpdated(const QStringList &modelStrings, const QStringList &icaos, const QStringList &airlines, const QStringList &liveries);