diff --git a/lib/libc/net/getipnodebyname.3 b/lib/libc/net/getipnodebyname.3
index 7220af4094fc..d5a881ae7cf4 100644
--- a/lib/libc/net/getipnodebyname.3
+++ b/lib/libc/net/getipnodebyname.3
@@ -44,6 +44,7 @@
 .Nd nodename-to-address and address-to-nodename translation
 .\"
 .Sh SYNOPSIS
+.Fd #include <sys/types.h>
 .Fd #include <sys/socket.h>
 .Fd #include <netdb.h>
 .Ft "struct hostent *"