Index: src/runtime/ObjFW_RT.h
==================================================================
--- src/runtime/ObjFW_RT.h
+++ src/runtime/ObjFW_RT.h
@@ -27,12 +27,10 @@
 
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 
-#import "platform.h"
-
 #ifndef __has_feature
 # define __has_feature(x) 0
 #endif
 
 #ifndef __has_attribute
@@ -61,11 +59,11 @@
 #define NO  false
 
 typedef struct objc_class *Class;
 typedef struct objc_object *id;
 typedef const struct objc_selector *SEL;
-#if !defined(OF_WII) && !defined(OF_AMIGAOS)
+#if !defined(__wii__) && !defined(__amigaos__)
 typedef bool BOOL;
 #endif
 typedef id _Nullable (*IMP)(id _Nonnull, SEL _Nonnull, ...);
 typedef void (*objc_uncaught_exception_handler)(id _Nullable);
 typedef void (*objc_enumeration_mutation_handler)(id _Nonnull);