diff --git a/tests/drivers/adc/adc_api/src/test_adc.c b/tests/drivers/adc/adc_api/src/test_adc.c
index 778834023ca..8be7ca915e8 100644
--- a/tests/drivers/adc/adc_api/src/test_adc.c
+++ b/tests/drivers/adc/adc_api/src/test_adc.c
@@ -276,7 +276,8 @@
 #define ADC_GAIN		ADC_GAIN_1
 #define ADC_REFERENCE		ADC_REF_INTERNAL
 #define ADC_ACQUISITION_TIME	ADC_ACQ_TIME_DEFAULT
-#define ADC_1ST_CHANNEL_ID	15
+#define ADC_1ST_CHANNEL_ID	12
+#define ADC_2ND_CHANNEL_ID	15
 
 #elif defined(CONFIG_BOARD_TWR_KE18F)
 #define ADC_DEVICE_NODE		DT_INST(0, nxp_kinetis_adc12)