diff --git a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp
index 5d3aba32b..b79aabb92 100644
--- a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp
+++ b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.cpp
@@ -38,11 +38,6 @@ namespace BlackSimPlugin
             }
         }
 
-        QString CFGSwiftBusServiceProxy::getVersionNumber()
-        {
-            return m_dbusInterface->callDBusRet<QString>(QLatin1String("getVersionNumber"));
-        }
-
         void CFGSwiftBusServiceProxy::getOwnAircraftSituationData(FlightgearData *o_flightgearData)
         {
             QPointer<CFGSwiftBusServiceProxy> myself(this);
diff --git a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h
index 51a05da1e..c68466b8a 100644
--- a/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h
+++ b/src/plugins/simulator/flightgear/fgswiftbusserviceproxy.h
@@ -97,9 +97,6 @@ namespace BlackSimPlugin
             void airportsInRangeUpdated(const QStringList &icaoCodes, const QStringList &names, const QList<double> &lats, const QList<double> &lons, const QList<double> &alts);
 
         public slots:
-            //! Get FGSwiftBus version number
-            QString getVersionNumber();
-
             //! Get own aircraft situation data
             void getOwnAircraftSituationData(FlightgearData *o_flightgearData);