diff --git a/meta-raspberrypi/conf/machine/raspberrypi-cm3.conf b/meta-raspberrypi/conf/machine/raspberrypi-cm3.conf
index c8677b4..638c2ea 100644
--- a/meta-raspberrypi/conf/machine/raspberrypi-cm3.conf
+++ b/meta-raspberrypi/conf/machine/raspberrypi-cm3.conf
@@ -10,3 +10,5 @@
 SDIMG_KERNELIMAGE ?= "kernel7.img"
 UBOOT_MACHINE = "rpi_3_32b_config"
 SERIAL_CONSOLES ?= "115200;ttyAMA0"
+
+ARMSTUB ?= "armstub.bin"