diff --git a/cockatrice/src/client/sound_engine.h b/cockatrice/src/client/sound_engine.h
index fd55e7536..7d99c00f4 100644
--- a/cockatrice/src/client/sound_engine.h
+++ b/cockatrice/src/client/sound_engine.h
@@ -1,12 +1,12 @@
 #ifndef SOUNDENGINE_H
 #define SOUNDENGINE_H
 
+#include <QAudioOutput>
 #include <QMap>
 #include <QMediaPlayer>
 #include <QObject>
 #include <QString>
 
-class QAudioOutput;
 class QBuffer;
 
 typedef QMap<QString, QString> QStringMap;