diff --git a/include/net/nexthop.h b/include/net/nexthop.h
index 8f5a2ab45920..d92046a4a078 100644
--- a/include/net/nexthop.h
+++ b/include/net/nexthop.h
@@ -126,7 +126,7 @@ struct nh_group {
 	bool			has_v4;
 
 	struct nh_res_table __rcu *res_table;
-	struct nh_grp_entry	nh_entries[];
+	struct nh_grp_entry	nh_entries[] __counted_by(num_nh);
 };
 
 struct nexthop {