diff --git a/sys/netpfil/pf/pf_ioctl.c b/sys/netpfil/pf/pf_ioctl.c
index 68307c9e7bb3..45f14fc92f7b 100644
--- a/sys/netpfil/pf/pf_ioctl.c
+++ b/sys/netpfil/pf/pf_ioctl.c
@@ -1260,6 +1260,8 @@ pf_hash_rule(MD5_CTX *ctx, struct pf_krule *rule)
 	PF_MD5_UPD(rule, allow_opts);
 	PF_MD5_UPD(rule, rt);
 	PF_MD5_UPD(rule, tos);
+	if (rule->anchor != NULL)
+		PF_MD5_UPD_STR(rule, anchor->path);
 }
 
 static bool