diff --git a/src/client.cpp b/src/client.cpp
index 46077360..689978ba 100755
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -128,8 +128,8 @@ CClient::CClient ( const quint16 iPortNumber ) :
         SIGNAL ( CLPingWithNumClientsReceived ( CHostAddress, int, int ) ),
         this, SLOT ( OnCLPingWithNumClientsReceived ( CHostAddress, int, int ) ) );
 
-    QObject::connect ( &Sound, SIGNAL ( ReinitRequest ( ESndCrdResetType ) ),
-        this, SLOT ( OnSndCrdReinitRequest ( ESndCrdResetType ) ) );
+    QObject::connect ( &Sound, SIGNAL ( ReinitRequest ( int ) ),
+        this, SLOT ( OnSndCrdReinitRequest ( int ) ) );
 }
 
 void CClient::OnSendProtMessage ( CVector<uint8_t> vecMessage )
@@ -443,8 +443,13 @@ void CClient::SetSndCrdRightOutputChannel ( const int iNewChan )
     }
 }
 
-void CClient::OnSndCrdReinitRequest ( ESndCrdResetType eSndCrdResetType )
+void CClient::OnSndCrdReinitRequest ( int iSndCrdResetType )
 {
+    // in older QT versions, enums cannot easily be used in signals without
+    // registering them -> workaroud: we use the int type and cast to the enum
+    const ESndCrdResetType eSndCrdResetType =
+        static_cast<ESndCrdResetType> ( iSndCrdResetType );
+
     // if client was running then first
     // stop it and restart again after new initialization
     const bool bWasRunning = Sound.IsRunning();
diff --git a/src/client.h b/src/client.h
index 36cf474c..1121de85 100755
--- a/src/client.h
+++ b/src/client.h
@@ -335,7 +335,7 @@ public slots:
                                           int          iMs,
                                           int          iNumClients );
 
-    void OnSndCrdReinitRequest ( ESndCrdResetType eSndCrdResetType );
+    void OnSndCrdReinitRequest ( int iSndCrdResetType );
 
 signals:
     void ConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo );
diff --git a/src/soundbase.h b/src/soundbase.h
index cae24c9a..d23fb61f 100755
--- a/src/soundbase.h
+++ b/src/soundbase.h
@@ -36,7 +36,7 @@
 // problem: in signals it seems not to work to use CSoundBase::ESndCrdResetType
 enum ESndCrdResetType
 {
-    RS_ONLY_RESTART,
+    RS_ONLY_RESTART = 1,
     RS_ONLY_RESTART_AND_INIT,
     RS_RELOAD_RESTART_AND_INIT
 };
@@ -120,7 +120,7 @@ protected:
     QString          strDriverNames[MAX_NUMBER_SOUND_CARDS];
 
 signals:
-    void ReinitRequest ( ESndCrdResetType eSndCrdResetType );
+    void ReinitRequest ( int iSndCrdResetType );
 };
 
 #endif /* !defined ( SOUNDBASE_HOIHGEH8_3_4344456456345634565KJIUHF1912__INCLUDED_ ) */