diff --git a/esp3d/src/modules/serial/serial_service.cpp b/esp3d/src/modules/serial/serial_service.cpp
index eef6c51b..9c234898 100644
--- a/esp3d/src/modules/serial/serial_service.cpp
+++ b/esp3d/src/modules/serial/serial_service.cpp
@@ -36,7 +36,7 @@ HardwareSerial *Serials[MAX_SERIAL] = {&Serial, &Serial1};
 
 #if defined(ARDUINO_ARCH_ESP32)
 
-#if defined(CONFIG_IDF_TARGET_ESP32C3)
+#if defined(CONFIG_IDF_TARGET_ESP32C3) || defined(CONFIG_IDF_TARGET_ESP32S2)
 #define MAX_SERIAL 2
 HardwareSerial *Serials[MAX_SERIAL] = {&Serial, &Serial1};
 #else