diff --git a/nrf5/boards/pca10028/mpconfigboard.h b/nrf5/boards/pca10028/mpconfigboard.h
index 1c3f5bf02a..1e44ceef1a 100644
--- a/nrf5/boards/pca10028/mpconfigboard.h
+++ b/nrf5/boards/pca10028/mpconfigboard.h
@@ -34,6 +34,7 @@
 #define MICROPY_PY_MACHINE_TIMER    (1)
 #define MICROPY_PY_MACHINE_RTC      (1)
 #define MICROPY_PY_MACHINE_HW_I2C   (1)
+#define MICROPY_PY_MACHINE_ADC      (1)
 
 #define MICROPY_PY_USOCKET          (0)
 #define MICROPY_PY_NETWORK          (0)
diff --git a/nrf5/boards/pca10040/mpconfigboard.h b/nrf5/boards/pca10040/mpconfigboard.h
index b5a41264f8..e5d0106087 100644
--- a/nrf5/boards/pca10040/mpconfigboard.h
+++ b/nrf5/boards/pca10040/mpconfigboard.h
@@ -35,6 +35,7 @@
 #define MICROPY_PY_MACHINE_TIMER    (1)
 #define MICROPY_PY_MACHINE_RTC      (1)
 #define MICROPY_PY_MACHINE_HW_I2C   (1)
+#define MICROPY_PY_MACHINE_ADC      (1)
 
 #define MICROPY_PY_DISPLAY                  (1)
 #define MICROPY_PY_DISPLAY_EPAPER_SLD00200P (1)
diff --git a/nrf5/boards/pca10056/mpconfigboard.h b/nrf5/boards/pca10056/mpconfigboard.h
index ed0070301a..2e08970d9d 100644
--- a/nrf5/boards/pca10056/mpconfigboard.h
+++ b/nrf5/boards/pca10056/mpconfigboard.h
@@ -33,6 +33,7 @@
 #define MICROPY_PY_MACHINE_PWM      (1)
 #define MICROPY_PY_MACHINE_SPI      (1)
 #define MICROPY_PY_MACHINE_HW_I2C   (1)
+#define MICROPY_PY_MACHINE_ADC      (1)
 
 #define MICROPY_PY_DISPLAY                  (1)
 #define MICROPY_PY_DISPLAY_EPAPER_SLD00200P (1)