diff --git a/platformio.ini b/platformio.ini
index 6a322a4..62ab01c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,8 +18,8 @@ platform = espressif8266
 framework = arduino
 monitor_speed = 115200
 upload_speed = 115200
-upload_port = /dev/ttyUSB0
-monitor_port = /dev/ttyUSB0
+upload_port = /dev/ttyS0
+monitor_port = /dev/ttyS0
 board_build.flash_mode = dout
 build_flags =
 	-Wno-unused-function