diff --git a/drivers/phy/marvell/phy-mvebu-a3700-comphy.c b/drivers/phy/marvell/phy-mvebu-a3700-comphy.c
index 68710ad1ad70..1d1db1737422 100644
--- a/drivers/phy/marvell/phy-mvebu-a3700-comphy.c
+++ b/drivers/phy/marvell/phy-mvebu-a3700-comphy.c
@@ -603,7 +603,7 @@ static void comphy_gbe_phy_init(struct mvebu_a3700_comphy_lane *lane,
 	u16 val;
 
 	fix_idx = 0;
-	for (addr = 0; addr < 512; addr++) {
+	for (addr = 0; addr < ARRAY_SIZE(gbe_phy_init); addr++) {
 		/*
 		 * All PHY register values are defined in full for 3.125Gbps
 		 * SERDES speed. The values required for 1.25 Gbps are almost