diff --git a/usr.sbin/traceroute6/Makefile b/usr.sbin/traceroute6/Makefile
index d2f6de1e04ce..a05e98b45115 100644
--- a/usr.sbin/traceroute6/Makefile
+++ b/usr.sbin/traceroute6/Makefile
@@ -19,7 +19,7 @@ BINOWN=	root
 BINGRP=	bin
 BINMODE=4555
 
-CFLAGS+=-DINET6 -DIPSEC
+CFLAGS+=-DINET6 -DIPSEC -DHAVE_POLL
 DPADD=	${LIBIPSEC}
 LDADD=	-lipsec