diff --git a/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/config/sdk_config.h b/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/config/sdk_config.h
index 2c37583e2b..ab33c47dc6 100644
--- a/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/config/sdk_config.h
+++ b/targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/config/sdk_config.h
@@ -3124,7 +3124,7 @@
 // <3=> 14 bit 
 
 #ifndef NRFX_SAADC_CONFIG_RESOLUTION
-#define NRFX_SAADC_CONFIG_RESOLUTION 1
+#define NRFX_SAADC_CONFIG_RESOLUTION 2
 #endif
 
 // <o> NRFX_SAADC_CONFIG_OVERSAMPLE  - Sample period