diff --git a/unistd.in.h b/unistd.in.h
-index b4a3f5b..dd0d2c2 100644
+index b82be83..9df3f13 100644
--- a/unistd.in.h
+++ b/unistd.in.h
@@ -125,7 +125,11 @@
# define __need_getopt
# include <getopt.h>
#endif
-@@ -402,7 +406,7 @@ _GL_WARN_ON_USE (dup3, "dup3 is unportable - "
- "VARIABLE=VALUE", terminated with a NULL. */
- # if defined __APPLE__ && defined __MACH__
- # include <TargetConditionals.h>
--# if !defined TARGET_OS_IPHONE && !defined TARGET_IPHONE_SIMULATOR
-+# if !TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR
- # define _GL_USE_CRT_EXTERNS
- # endif
- # endif