diff --git a/ports/nrf/modules/machine/modmachine.c b/ports/nrf/modules/machine/modmachine.c
index 7d3f46999..0b0c4887d 100644
--- a/ports/nrf/modules/machine/modmachine.c
+++ b/ports/nrf/modules/machine/modmachine.c
@@ -225,6 +225,9 @@ STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_lightsleep),         MP_ROM_PTR(&machine_lightsleep_obj) },
     { MP_ROM_QSTR(MP_QSTR_deepsleep),          MP_ROM_PTR(&machine_deepsleep_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset_cause),        MP_ROM_PTR(&machine_reset_cause_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mem8),               MP_ROM_PTR(&machine_mem8_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mem16),              MP_ROM_PTR(&machine_mem16_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mem32),              MP_ROM_PTR(&machine_mem32_obj) },
     { MP_ROM_QSTR(MP_QSTR_Pin),                MP_ROM_PTR(&pin_type) },
 #if MICROPY_PY_MACHINE_UART
     { MP_ROM_QSTR(MP_QSTR_UART),               MP_ROM_PTR(&machine_hard_uart_type) },