diff --git a/arch/arm/mach-bcm283x/include/mach/mbox.h b/arch/arm/mach-bcm283x/include/mach/mbox.h
index e3a893e..f892803 100644
--- a/arch/arm/mach-bcm283x/include/mach/mbox.h
+++ b/arch/arm/mach-bcm283x/include/mach/mbox.h
@@ -46,9 +46,12 @@
 struct bcm2835_mbox_regs {
 	u32 read;
 	u32 rsvd0[5];
-	u32 status;
-	u32 config;
+	u32 mail0_status;
+	u32 mail0_config;
 	u32 write;
+	u32 rsvd1[5];
+	u32 mail1_status;
+	u32 mail1_config;
 };
 
 #define BCM2835_MBOX_STATUS_WR_FULL	0x80000000