*/
#ifdef PNG_FLOATING_POINT_SUPPORTED
-# ifdef MACOS && !wxOSX_USE_IPHONE
+# if defined(MACOS) && !wxOSX_USE_IPHONE
/* We need to check that <math.h> hasn't already been included earlier
* as it seems it doesn't agree with <fp.h>, yet we should really use
* <fp.h> if possible.