diff --git a/lib/filter_cli.c b/lib/filter_cli.c
index 6529fd6e18..85cb8175f5 100644
--- a/lib/filter_cli.c
+++ b/lib/filter_cli.c
@@ -104,7 +104,8 @@ static int64_t acl_zebra_get_seq(struct access_list *acl, const char *action,
 		f.type = FILTER_DENY;
 
 	fz = &f.u.zfilter;
-	fz->prefix = *p;
+	if (p->family)
+		prefix_copy(&fz->prefix, p);
 	fz->exact = exact;
 
 	fn = filter_lookup_zebra(acl, &f);