diff --git a/Guide-To-Setup-thermal-printer-from-source-code.md b/Guide-To-Setup-thermal-printer-from-source-code.md
index 30c565d..b87eb6b 100644
--- a/Guide-To-Setup-thermal-printer-from-source-code.md
+++ b/Guide-To-Setup-thermal-printer-from-source-code.md
@@ -39,7 +39,7 @@ sudo systemctl stop devterm-printer
 sudo cp -rf devterm_thermal_printer.elf /usr/local/bin  
 sudo systemctl start devterm-printer 
 ```
-## debug or run it from manually
+## Debug or run it from manually
 1. setup socat socket for data receving for thermal printer
 ```
    sudo systemctl stop devterm-printer #stop service