diff --git a/platformio.ini b/platformio.ini
index 692389f..d5743dd 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -32,6 +32,7 @@ build_flags =
 	-D BOARD_M5ATOM
 	${env.build_flags}
 upload_port = /dev/esp32
+upload_protocol = esptool
 
 [env:m5stack-atom-canunit]
 board = m5stack-atom
@@ -41,12 +42,14 @@ build_flags =
   -D BOARD_M5ATOM_CANUNIT
   ${env.build_flags}
 upload_port = /dev/esp32
+upload_protocol = esptool
 
 [env:m5stickc-atom-canunit]
-board = m5stack-atom
+board = m5stick-c
 lib_deps =
         ${env.lib_deps}
 build_flags = 
   -D BOARD_M5STICK_CANUNIT -D HAS_RTC -D HAS_M5LCD
   ${env.build_flags}
 upload_port = /dev/esp32
+upload_protocol = esptool