diff --git a/build.sh b/build.sh
index 84194b9..ac71905 100644
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,10 @@
 dest_dir=dist/appointment
+if [[ -d $dest_dir ]]
+then
+    echo "$dest_dir exists on your filesystem."
+else
+  mkdir -p $dest_dir
+fi
 pyarmor obfuscate --recursive --output $dest_dir/src src/__init__.py
 cp main.py $dest_dir
 cp appointment.py $dest_dir