diff --git a/targets/TARGET_STM/TARGET_STM32L1/TARGET_MTB_RAK811/PeripheralPins.c b/targets/TARGET_STM/TARGET_STM32L1/TARGET_MTB_RAK811/PeripheralPins.c
index a2f48c2d80..f7ca4e34f0 100644
--- a/targets/TARGET_STM/TARGET_STM32L1/TARGET_MTB_RAK811/PeripheralPins.c
+++ b/targets/TARGET_STM/TARGET_STM32L1/TARGET_MTB_RAK811/PeripheralPins.c
@@ -39,6 +39,9 @@
 //*** ADC ***
 
 const PinMap PinMap_ADC[] = {
+    {PA_0,  ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC_IN0
+    {PA_1,  ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC_IN1
+    {PA_2,  ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC_IN2
     {PB_12, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // ADC_IN18
     {PB_14, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 20, 0)}, // ADC_IN20
     {PB_15, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 21, 0)}, // ADC_IN21