diff --git a/nrf5/boards/microbit/nrf51_hal_conf.h b/nrf5/boards/microbit/nrf51_hal_conf.h
index 4bd11e1dd5..b24164aeb1 100644
--- a/nrf5/boards/microbit/nrf51_hal_conf.h
+++ b/nrf5/boards/microbit/nrf51_hal_conf.h
@@ -2,9 +2,9 @@
 #define NRF51_HAL_CONF_H__
 
 #define HAL_UART_MODULE_ENABLED
-#define HAL_SPI_MODULE_ENABLED
+// #define HAL_SPI_MODULE_ENABLED
 #define HAL_TIME_MODULE_ENABLED
-#define HAL_RTC_MODULE_ENABLED
-#define HAL_TIMER_MODULE_ENABLED
+// #define HAL_RTC_MODULE_ENABLED
+// #define HAL_TIMER_MODULE_ENABLED
 
 #endif // NRF51_HAL_CONF_H__