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-rw-r--r--posix/sys/wait.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/posix/sys/wait.h b/posix/sys/wait.h
index ed904d909b..1eeac91200 100644
--- a/posix/sys/wait.h
+++ b/posix/sys/wait.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 94, 96, 97 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 96, 97, 98 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -29,7 +29,7 @@ __BEGIN_DECLS
 
 #include <bits/types.h>
 
-#if defined __USE_UNIX98 && !defined pid_t
+#if defined __USE_XOPEN && !defined pid_t
 typedef __pid_t pid_t;
 # define pid_t pid_t
 #endif