diff --git a/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h b/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
index ba509154f61a483f76790c55397518f91fe3dded..4899cc4a2cd7bc1703eed901d367513d97fbf6db 100644
--- a/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
+++ b/target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
@@ -75,7 +75,7 @@
 /* IMP Port state override register (8 bit) */
 #define B53_PORT_OVERRIDE_CTRL		0x0e
 #define   PORT_OVERRIDE_LINK		BIT(0)
-#define   PORT_OVERRIDE_HALF_DUPLEX	BIT(1) /* 0 = Full Duplex */
+#define   PORT_OVERRIDE_FULL_DUPLEX	BIT(1) /* 0 = Half Duplex */
 #define   PORT_OVERRIDE_SPEED_S		2
 #define   PORT_OVERRIDE_SPEED_10M	(0 << PORT_OVERRIDE_SPEED_S)
 #define   PORT_OVERRIDE_SPEED_100M	(1 << PORT_OVERRIDE_SPEED_S)