diff --git a/ports/esp32/machine_adcblock.c b/ports/esp32/machine_adcblock.c
index 77e4fcecc7..06c215f8ae 100644
--- a/ports/esp32/machine_adcblock.c
+++ b/ports/esp32/machine_adcblock.c
@@ -40,10 +40,10 @@
 #define DEFAULT_VREF 1100
 
 madcblock_obj_t madcblock_obj[] = {
-    #if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32C3
+    #if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
     {{&machine_adcblock_type}, ADC_UNIT_1, 12, -1, {0}},
     {{&machine_adcblock_type}, ADC_UNIT_2, 12, -1, {0}},
-    #elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
+    #elif CONFIG_IDF_TARGET_ESP32S2
     {{&machine_adcblock_type}, ADC_UNIT_1, 13, -1, {0}},
     {{&machine_adcblock_type}, ADC_UNIT_2, 13, -1, {0}},
     #endif