diff --git a/man3/atoi.3 b/man3/atoi.3
index 9e8a907d5..6bbc5b869 100644
--- a/man3/atoi.3
+++ b/man3/atoi.3
@@ -100,7 +100,7 @@ T{
 T}	Thread safety	MT-Safe locale
 .TE
 .SH CONFORMING TO
-SVr4, POSIX.1-2001, 4.3BSD, C99.
+POSIX.1-2001, POSIX.1-2008, C99, SVr4, 4.3BSD.
 C89 and
 POSIX.1-1996 include the functions
 .BR atoi ()