--- Libc/Libc-583/include/crt_externs.h
+++ Libc/Libc-391.2.7/include/crt_externs.h
@@ -38,10 +38,5 @@
 extern int *_NSGetArgc(void);
 extern char ***_NSGetEnviron(void);
 extern char **_NSGetProgname(void);
-#ifdef __LP64__
-extern struct mach_header_64 *
-#else /* !__LP64__ */
-extern struct mach_header *
-#endif /* __LP64__ */
-				_NSGetMachExecuteHeader(void);
+extern struct mach_header *_NSGetMachExecuteHeader(void);
 __END_DECLS