diff --git a/sys/netpfil/pf/if_pfsync.c b/sys/netpfil/pf/if_pfsync.c
--- a/sys/netpfil/pf/if_pfsync.c
+++ b/sys/netpfil/pf/if_pfsync.c
@@ -1744,7 +1744,7 @@
 
 	PFSYNC_LOCK(sc);
 
-	if (!(sc->sc_ifp->if_flags & IFF_DRV_RUNNING) ||
+	if (!(sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) ||
 	    !(sc->sc_flags & PFSYNCF_DEFER)) {
 		PFSYNC_UNLOCK(sc);
 		return (0);