diff --git a/man3/catopen.3 b/man3/catopen.3
index 89d326e5a..58f523740 100644
--- a/man3/catopen.3
+++ b/man3/catopen.3
@@ -159,7 +159,7 @@ T{
 T}	Thread safety	MT-Safe
 .TE
 .SH CONFORMING TO
-POSIX.1-2001.
+POSIX.1-2001, POSIX.1-2008.
 .\" In XPG 1987, Vol. 3 it says:
 .\" .I "The flag argument of catopen is reserved for future use"
 .\" .IR "and should be set to 0" .
@@ -170,7 +170,7 @@ POSIX.1-2001.
 .\" .B MCLoadAll
 .\" (see below).
 .SH NOTES
-The above is the POSIX.1-2001 description.
+The above is the POSIX.1 description.
 The glibc value for
 .B NL_CAT_LOCALE
 is 1.