diff --git a/samples/drivers/adc/adc_dt/boards/esp32s2_saola.overlay b/samples/drivers/adc/adc_dt/boards/esp32s2_saola.overlay
index 9bdf0584c32..d43209179f7 100644
--- a/samples/drivers/adc/adc_dt/boards/esp32s2_saola.overlay
+++ b/samples/drivers/adc/adc_dt/boards/esp32s2_saola.overlay
@@ -22,7 +22,7 @@
 		zephyr,gain = "ADC_GAIN_1_4";
 		zephyr,reference = "ADC_REF_INTERNAL";
 		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
-		zephyr,resolution = <13>;
+		zephyr,resolution = <12>;
 	};
 };
 
@@ -36,6 +36,6 @@
 		zephyr,gain = "ADC_GAIN_1_4";
 		zephyr,reference = "ADC_REF_INTERNAL";
 		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
-		zephyr,resolution = <13>;
+		zephyr,resolution = <12>;
 	};
 };