1 files changed, 4 insertions, 2 deletions
diff --git a/hw/arm/microbit.c b/hw/arm/microbit.c
index a91acab1cb..e94f711e89 100644
--- a/hw/arm/microbit.c
+++ b/hw/arm/microbit.c
@@ -18,13 +18,15 @@
 #include "hw/arm/nrf51_soc.h"
 #include "hw/i2c/microbit_i2c.h"
 #include "hw/qdev-properties.h"
+#include "qom/object.h"
 
-typedef struct {
+struct MicrobitMachineState {
     MachineState parent;
 
     NRF51State nrf51;
     MicrobitI2CState i2c;
-} MicrobitMachineState;
+};
+typedef struct MicrobitMachineState MicrobitMachineState;
 
 #define TYPE_MICROBIT_MACHINE MACHINE_TYPE_NAME("microbit")