diff --git a/build.sh b/build.sh
index ac71905..d2cc3d5 100644
--- a/build.sh
+++ b/build.sh
@@ -5,7 +5,12 @@ then
 else
   mkdir -p $dest_dir
 fi
-pyarmor obfuscate --recursive --output $dest_dir/src src/__init__.py
+if [[ "$OSTYPE" == "msys" ]]
+then
+./venv/Scripts/pyarmor.exe obfuscate --recursive --output $dest_dir/src src/__init__.py
+else
+  pyarmor obfuscate --recursive --output $dest_dir/src src/__init__.py
+fi
 cp main.py $dest_dir
 cp appointment.py $dest_dir
 cp requirements.txt $dest_dir
\ No newline at end of file