diff --git a/man3/sem_close.3 b/man3/sem_close.3
index 2cf46bc95..b3655eb48 100644
--- a/man3/sem_close.3
+++ b/man3/sem_close.3
@@ -65,7 +65,7 @@ T}	Thread safety	MT-Safe
 .TE
 
 .SH CONFORMING TO
-POSIX.1-2001.
+POSIX.1-2001, POSIX.1-2008.
 .SH NOTES
 All open named semaphores are automatically closed on process
 termination, or upon