diff --git a/src/Conductor.cpp b/src/Conductor.cpp
index 612df8a..d9981d0 100644
--- a/src/Conductor.cpp
+++ b/src/Conductor.cpp
@@ -315,7 +315,7 @@ void CConductor::reconnectMidi()
 {
     if (!validMidiOutput()) {
         QString midiInputName = m_settings->value("Midi/Input").toString();
-        if (midiInputName.startsWith(tr("None"))) {
+        if (midiInputName.startsWith(QCoreApplication::translate("CConductor", "None"))) {
             CChord::setPianoRange(PC_KEY_LOWEST_NOTE, PC_KEY_HIGHEST_NOTE);
         } else {
             CChord::setPianoRange(m_settings->value("Keyboard/LowestNote", 0).toInt(),
diff --git a/src/MidiDeviceBase.h b/src/MidiDeviceBase.h
index b35e0a5..46c004a 100644
--- a/src/MidiDeviceBase.h
+++ b/src/MidiDeviceBase.h
@@ -37,7 +37,7 @@
 
 #include "MidiEvent.h"
 
-class CMidiDeviceBase : public QObject
+class CMidiDeviceBase
 {
 public:
     virtual void init() = 0;
diff --git a/src/MidiDeviceFluidSynth.h b/src/MidiDeviceFluidSynth.h
index 06630b1..eb35b7f 100644
--- a/src/MidiDeviceFluidSynth.h
+++ b/src/MidiDeviceFluidSynth.h
@@ -63,7 +63,7 @@ public:
 
     static QString getFluidInternalName()
     {
-        return QString(tr("Internal Sound") + " " + FLUID_NAME );
+        return QCoreApplication::translate("CMidiDeviceFluidSynth", "Internal Sound %1").arg(QString::fromUtf8(FLUID_NAME));
     }
 
 private: