diff --git a/arch/arm/include/asm/arch-bcm2835/mbox.h b/arch/arm/include/asm/arch-bcm2835/mbox.h
index 38cb42a..dded857 100644
--- a/arch/arm/include/asm/arch-bcm2835/mbox.h
+++ b/arch/arm/include/asm/arch-bcm2835/mbox.h
@@ -143,7 +143,7 @@
 #define BCM2835_MBOX_POWER_DEVID_SPI		7
 #define BCM2835_MBOX_POWER_DEVID_CCP2TX		8
 
-#define BCM2835_MBOX_POWER_STATE_RESP_ON	(1 << 1)
+#define BCM2835_MBOX_POWER_STATE_RESP_ON	(1 << 0)
 /* Device doesn't exist */
 #define BCM2835_MBOX_POWER_STATE_RESP_NODEV	(1 << 1)