diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index 2584bc038f94a84525a4a5b60cfad105fbdc777c..b149e601f6737eea40a1dd35b852185da16ed6de 100644
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -739,7 +739,7 @@ static void mlx4_cleanup_qp_zones(struct mlx4_dev *dev)
 		int i;
 
 		for (i = 0;
-		     i < sizeof(qp_table->zones_uids)/sizeof(qp_table->zones_uids[0]);
+		     i < ARRAY_SIZE(qp_table->zones_uids);
 		     i++) {
 			struct mlx4_bitmap *bitmap =
 				mlx4_zone_get_bitmap(qp_table->zones,