diff --git a/demos/modules/gwin/widgets/gfxconf.h b/demos/modules/gwin/widgets/gfxconf.h
index fffe685d..f8d8fe5f 100644
--- a/demos/modules/gwin/widgets/gfxconf.h
+++ b/demos/modules/gwin/widgets/gfxconf.h
@@ -29,7 +29,7 @@
 #ifndef _GFXCONF_H
 #define _GFXCONF_H
 
-#define GFX_USE_OS_CHIBIOS		TRUE
+//#define GFX_USE_OS_CHIBIOS		TRUE
 //#define GFX_USE_OS_WIN32		TRUE
 //#define GFX_USE_OS_POSIX		TRUE
 
diff --git a/include/gos/osx.h b/include/gos/osx.h
index 2ba1c45d..3f36aaff 100644
--- a/include/gos/osx.h
+++ b/include/gos/osx.h
@@ -48,7 +48,6 @@ typedef pthread_mutex_t		gfxMutex;
 #define gfxSemSignalI(psem)				gfxSemSignal(psem)
 #define gfxSemCounterI(pSem)			((pSem)->cnt)
 
-#define TRUE						1
 #define TIME_IMMEDIATE				0
 #define TIME_INFINITE				((delaytime_t)-1)
 #define MAX_SEMAPHORE_COUNT			((semcount_t)-1)