diff --git a/src/audio/sampman_miles.cpp b/src/audio/sampman_miles.cpp
index eccc9114..11e2b0ff 100644
--- a/src/audio/sampman_miles.cpp
+++ b/src/audio/sampman_miles.cpp
@@ -1,4 +1,6 @@
-#if defined(AUDIO_MSS) || defined (__MWERKS__)
+#include "common.h"
+
+#ifdef AUDIO_MSS
 #include <shlobj.h>
 #include <shlguid.h>
 
@@ -8,7 +10,6 @@
 #include "eax-util.h"
 #include "mss.h"
 
-#include "common.h"
 #include "sampman.h"
 #include "AudioManager.h"
 #include "MusicManager.h"
diff --git a/src/core/common.h b/src/core/common.h
index 596c47ee..33d8910d 100644
--- a/src/core/common.h
+++ b/src/core/common.h
@@ -16,6 +16,7 @@
 #include <math.h>
 
 #ifdef __MWERKS__
+#define AUDIO_MSS
 #define RWLIBS // codewarrior doesn't support project level defines - so not even this is enough, but still catches most ifdefs
 #endif