diff --git a/drivers/net/arm/am79c961a.c b/drivers/net/arm/am79c961a.c
index 2143eeb..77964556 100644
--- a/drivers/net/arm/am79c961a.c
+++ b/drivers/net/arm/am79c961a.c
@@ -414,7 +414,7 @@
 	/*
 	 * Update the multicast hash table
 	 */
-	for (i = 0; i < sizeof(multi_hash) / sizeof(multi_hash[0]); i++)
+	for (i = 0; i < ARRAY_SIZE(multi_hash); i++)
 		write_rreg(dev->base_addr, i + LADRL, multi_hash[i]);
 
 	/*