diff --git a/lib/libc/sys/shmget.2 b/lib/libc/sys/shmget.2
index 309434553162..6f3e323b66e4 100644
--- a/lib/libc/sys/shmget.2
+++ b/lib/libc/sys/shmget.2
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 17, 2010
+.Dd August 12, 2017
 .Dt SHMGET 2
 .Os
 .Sh NAME
@@ -35,6 +35,7 @@
 .Lb libc
 .Sh SYNOPSIS
 .In sys/types.h
+.In sys/stat.h
 .In sys/ipc.h
 .In sys/shm.h
 .Ft int