diff --git a/usr.sbin/ipfwpcap/ipfwpcap.c b/usr.sbin/ipfwpcap/ipfwpcap.c
index d579bd94ef01..96ee47e836a6 100644
--- a/usr.sbin/ipfwpcap/ipfwpcap.c
+++ b/usr.sbin/ipfwpcap/ipfwpcap.c
@@ -41,6 +41,8 @@
 #include <netinet/in_systm.h>	/* for IP_MAXPACKET */
 #include <netinet/ip.h>		/* for IP_MAXPACKET */
 
+#include <net/bpf.h>
+
 /* XXX normally defined in config.h */
 #define HAVE_STRLCPY 1
 #define HAVE_SNPRINTF 1