Index: sys/netpfil/ipfilter/netinet/ip_fil_freebsd.c
===================================================================
--- sys/netpfil/ipfilter/netinet/ip_fil_freebsd.c
+++ sys/netpfil/ipfilter/netinet/ip_fil_freebsd.c
@@ -181,7 +181,6 @@
 #if 0
 		softc->ipf_slow_ch = timeout(ipf_timer_func, softc, hz/2);
 #endif
-		callout_init_rw(&softc->ipf_slow_ch, &softc->ipf_global.ipf_lk, CALLOUT_SHAREDLOCK);
 		callout_reset(&softc->ipf_slow_ch,
 			(hz / IPF_HZ_DIVIDE) * IPF_HZ_MULT,
 			ipf_timer_func, softc);