diff --git a/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c b/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
index 3bef15c24b9d..55107e248a39 100644
--- a/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
+++ b/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
@@ -156,7 +156,9 @@ struct	selinfo	ipfselwait[IPL_LOGSIZE];
 # include <sys/conf.h>
 # if defined(NETBSD_PF)
 #  include <net/pfil.h>
-#  include <netinet/ipprotosw.h>
+#  if (__FreeBSD_version < 501108)
+#   include <netinet/ipprotosw.h>
+#  endif
 /*
  * We provide the fr_checkp name just to minimize changes later.
  */