diff --git a/man2/msgop.2 b/man2/msgop.2
index 3a67093aa..6e3536a23 100644
--- a/man2/msgop.2
+++ b/man2/msgop.2
@@ -472,7 +472,7 @@ was specified in
 and this kernel was configured without
 .BR CONFIG_CHECKPOINT_RESTORE .
 .SH CONFORMING TO
-SVr4, POSIX.1-2001.
+POSIX.1-2001, POSIX.1-2008, SVr4.
 
 The
 .B MSG_EXCEPT