diff --git a/Telegram/SourceFiles/media/audio/media_audio.cpp b/Telegram/SourceFiles/media/audio/media_audio.cpp
index fd956e5f6..c882856f6 100644
--- a/Telegram/SourceFiles/media/audio/media_audio.cpp
+++ b/Telegram/SourceFiles/media/audio/media_audio.cpp
@@ -537,16 +537,16 @@ Mixer::Mixer(not_null<Audio::Instance*> instance)
 		});
 	}, _lifetime);
 
-	connect(this, SIGNAL(loaderOnStart(const AudioMsgId&, qint64)), _loader, SLOT(onStart(const AudioMsgId&, qint64)));
-	connect(this, SIGNAL(loaderOnCancel(const AudioMsgId&)), _loader, SLOT(onCancel(const AudioMsgId&)), Qt::QueuedConnection);
+	connect(this, SIGNAL(loaderOnStart(AudioMsgId,qint64)), _loader, SLOT(onStart(AudioMsgId,qint64)));
+	connect(this, SIGNAL(loaderOnCancel(AudioMsgId)), _loader, SLOT(onCancel(AudioMsgId)), Qt::QueuedConnection);
 	connect(_loader, SIGNAL(needToCheck()), _fader, SLOT(onTimer()));
-	connect(_loader, SIGNAL(error(const AudioMsgId&)), this, SLOT(onError(const AudioMsgId&)));
-	connect(_fader, SIGNAL(needToPreload(const AudioMsgId&)), _loader, SLOT(onLoad(const AudioMsgId&)));
-	connect(_fader, SIGNAL(playPositionUpdated(const AudioMsgId&)), this, SIGNAL(updated(const AudioMsgId&)));
-	connect(_fader, SIGNAL(audioStopped(const AudioMsgId&)), this, SLOT(onStopped(const AudioMsgId&)));
-	connect(_fader, SIGNAL(error(const AudioMsgId&)), this, SLOT(onError(const AudioMsgId&)));
-	connect(this, SIGNAL(stoppedOnError(const AudioMsgId&)), this, SIGNAL(updated(const AudioMsgId&)), Qt::QueuedConnection);
-	connect(this, SIGNAL(updated(const AudioMsgId&)), this, SLOT(onUpdated(const AudioMsgId&)));
+	connect(_loader, SIGNAL(error(AudioMsgId)), this, SLOT(onError(AudioMsgId)));
+	connect(_fader, SIGNAL(needToPreload(AudioMsgId)), _loader, SLOT(onLoad(AudioMsgId)));
+	connect(_fader, SIGNAL(playPositionUpdated(AudioMsgId)), this, SIGNAL(updated(AudioMsgId)));
+	connect(_fader, SIGNAL(audioStopped(AudioMsgId)), this, SLOT(onStopped(AudioMsgId)));
+	connect(_fader, SIGNAL(error(AudioMsgId)), this, SLOT(onError(AudioMsgId)));
+	connect(this, SIGNAL(stoppedOnError(AudioMsgId)), this, SIGNAL(updated(AudioMsgId)), Qt::QueuedConnection);
+	connect(this, SIGNAL(updated(AudioMsgId)), this, SLOT(onUpdated(AudioMsgId)));
 
 	_loaderThread.start();
 	_faderThread.start();