diff --git a/man2/getsockopt.2 b/man2/getsockopt.2
index b6e20a721..8595c89a2 100644
--- a/man2/getsockopt.2
+++ b/man2/getsockopt.2
@@ -173,14 +173,14 @@ The argument
 .I sockfd
 is a file, not a socket.
 .SH CONFORMING TO
-SVr4, 4.4BSD (these system calls first appeared in 4.2BSD),
-POSIX.1-2001.
+POSIX.1-2001, POSIX.1-2008,
+SVr4, 4.4BSD (these system calls first appeared in 4.2BSD).
 .\" SVr4 documents additional ENOMEM and ENOSR error codes, but does
 .\" not document the
 .\" .BR SO_SNDLOWAT ", " SO_RCVLOWAT ", " SO_SNDTIMEO ", " SO_RCVTIMEO
 .\" options
 .SH NOTES
-POSIX.1-2001 does not require the inclusion of
+POSIX.1 does not require the inclusion of
 .IR <sys/types.h> ,
 and this header file is not required on Linux.
 However, some historical (BSD) implementations required this header