diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index bc4ca17542..a8f5c14ae5 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -189,7 +189,7 @@ struct AspeedMachineState {
 #define TACOMA_BMC_HW_STRAP2  0x00000040
 
 /* Rainier hardware value: (QEMU prototype) */
-#define RAINIER_BMC_HW_STRAP1 0x00422016
+#define RAINIER_BMC_HW_STRAP1 (0x00422016 | SCU_AST2600_HW_STRAP_BOOT_SRC_EMMC)
 #define RAINIER_BMC_HW_STRAP2 0x80000848
 
 /* Fuji hardware value */