diff --git a/ports/nrf/boards/actinius_icarus/mpconfigboard.h b/ports/nrf/boards/actinius_icarus/mpconfigboard.h
index e344d2d6d0..e99d731df9 100644
--- a/ports/nrf/boards/actinius_icarus/mpconfigboard.h
+++ b/ports/nrf/boards/actinius_icarus/mpconfigboard.h
@@ -34,7 +34,7 @@
 #define MICROPY_PY_MACHINE_HW_PWM   (0)
 #define MICROPY_PY_MACHINE_HW_SPI   (1)
 #define MICROPY_PY_MACHINE_TIMER    (1)
-#define MICROPY_PY_MACHINE_RTCOUNTER (0)
+#define MICROPY_PY_MACHINE_RTCOUNTER (1)
 #define MICROPY_PY_MACHINE_I2C      (1)
 #define MICROPY_PY_MACHINE_ADC      (0)
 #define MICROPY_PY_MACHINE_TEMP     (0)
diff --git a/ports/nrf/boards/pca10090/mpconfigboard.h b/ports/nrf/boards/pca10090/mpconfigboard.h
index e4e5142909..28381c40d1 100644
--- a/ports/nrf/boards/pca10090/mpconfigboard.h
+++ b/ports/nrf/boards/pca10090/mpconfigboard.h
@@ -34,7 +34,7 @@
 #define MICROPY_PY_MACHINE_HW_PWM   (0)
 #define MICROPY_PY_MACHINE_HW_SPI   (1)
 #define MICROPY_PY_MACHINE_TIMER    (0)
-#define MICROPY_PY_MACHINE_RTCOUNTER (0)
+#define MICROPY_PY_MACHINE_RTCOUNTER (1)
 #define MICROPY_PY_MACHINE_I2C      (1)
 #define MICROPY_PY_MACHINE_ADC      (0)
 #define MICROPY_PY_MACHINE_TEMP     (0)