diff --git a/src/sound/cocoa_s.cpp b/src/sound/cocoa_s.cpp
--- a/src/sound/cocoa_s.cpp
+++ b/src/sound/cocoa_s.cpp
@@ -24,7 +24,7 @@
 #include "../debug.h"
 #include "../driver.h"
 #include "../mixer.h"
-#include "../core/endian_func.hpp"
+#include "../core/endian_type.hpp"
 
 #include "cocoa_s.h"
 
@@ -61,9 +61,9 @@ const char *SoundDriver_Cocoa::Start(con
 	requestedDesc.mBitsPerChannel = 16;
 	requestedDesc.mFormatFlags |= kLinearPCMFormatFlagIsSignedInteger;
 
-#ifdef TTD_BIG_ENDIAN
+#if TTD_ENDIAN == TTD_BIG_ENDIAN
 	requestedDesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
-#endif
+#endif /* TTD_ENDIAN == TTD_BIG_ENDIAN */
 
 	requestedDesc.mFramesPerPacket = 1;
 	requestedDesc.mBytesPerFrame = requestedDesc.mBitsPerChannel * requestedDesc.mChannelsPerFrame / 8;