2 files changed, 5 insertions, 1 deletions
diff --git a/engines/mortevielle/sound.cpp b/engines/mortevielle/sound.cpp
index f02ccb69ea..77eba4cd6d 100644
--- a/engines/mortevielle/sound.cpp
+++ b/engines/mortevielle/sound.cpp
@@ -28,6 +28,7 @@
 #include "mortevielle/mortevielle.h"
 #include "mortevielle/sound.h"
 
+#include "audio/audiostream.h"
 #include "audio/decoders/raw.h"
 #include "common/scummsys.h"
 
diff --git a/engines/mortevielle/sound.h b/engines/mortevielle/sound.h
index d913684935..15b4667afa 100644
--- a/engines/mortevielle/sound.h
+++ b/engines/mortevielle/sound.h
@@ -28,11 +28,14 @@
 #ifndef MORTEVIELLE_SOUND_H
 #define MORTEVIELLE_SOUND_H
 
-#include "audio/audiostream.h"
 #include "audio/mixer.h"
 #include "common/mutex.h"
 #include "common/queue.h"
 
+namespace Audio {
+class QueuingAudioStream;
+}
+
 namespace Mortevielle {
 class MortevielleEngine;