diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 5aa024b..2f2d731 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -124,7 +124,7 @@
 static inline void tipc_nmap_diff(struct tipc_node_map *nm_a, struct tipc_node_map *nm_b,
 				  struct tipc_node_map *nm_diff)
 {
-	int stop = sizeof(nm_a->map) / sizeof(u32);
+	int stop = ARRAY_SIZE(nm_a->map);
 	int w;
 	int b;
 	u32 map;