diff --git a/SampleSrc/_Upload_FactoryTest.bat b/SampleSrc/_Upload_FactoryTest.bat
index 896901c..925a7ac 100644
--- a/SampleSrc/_Upload_FactoryTest.bat
+++ b/SampleSrc/_Upload_FactoryTest.bat
@@ -1,6 +1,6 @@
 
 @if %ERRORLEVEL% equ 0 (
-  %homedrive%%homepath%\bin\arduino-cli upload --fqbn esp32:esp32:m5stick-c -p %2 -i ..\M5StickCPlus_FactoryTest2022.ino.bin
+  %homedrive%%homepath%\bin\arduino-cli upload --fqbn esp32:esp32:m5stick-c -p %1 -i ..\M5StickCPlus_FactoryTest2022.ino.bin
   @if %ERRORLEVEL% equ 0 (
     exit
   )