diff --git a/cores/esp32/USB.cpp b/cores/esp32/USB.cpp
index 6174f28d738..d82659ebbcf 100644
--- a/cores/esp32/USB.cpp
+++ b/cores/esp32/USB.cpp
@@ -160,7 +160,7 @@ ESPUSB::~ESPUSB(){
 
 bool ESPUSB::begin(){
     if(!_started){
-#if CONFIG_IDF_TARGET_ESP32S3
+#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
         if(serial_number == "__MAC__"){
             StreamString s;
             uint8_t m[6];