diff --git a/ports/nrf/mpconfigport.h b/ports/nrf/mpconfigport.h
index 3ab1e0814f..f3c08059a0 100644
--- a/ports/nrf/mpconfigport.h
+++ b/ports/nrf/mpconfigport.h
@@ -175,6 +175,7 @@
 #define MICROPY_PY_MACHINE          (1)
 #define MICROPY_PY_MACHINE_INCLUDEFILE "ports/nrf/modules/machine/modmachine.c"
 #define MICROPY_PY_MACHINE_BARE_METAL_FUNCS (1)
+#define MICROPY_PY_MACHINE_BOOTLOADER (1)
 #define MICROPY_PY_MACHINE_PULSE    (0)
 #define MICROPY_PY_MACHINE_SOFTI2C  (MICROPY_PY_MACHINE_I2C)