diff --git a/README.md b/README.md
index 278d978..9748164 100644
--- a/README.md
+++ b/README.md
@@ -27,8 +27,10 @@ Guide
 
 ### Test
 
-    ./app.py
-    # go to http://localhost:8080
+    export FLASK_APP=`pwd`/app.py
+    export FLASK_DEBUG=1
+    flask run
+    # go to http://localhost:5000
 
 ### Deploy
 
diff --git a/app.py b/app.py
old mode 100755
new mode 100644
index 7b3c16e..313ed7a
--- a/app.py
+++ b/app.py
@@ -100,6 +100,3 @@ def set_style(style):
 def page_not_found(err):
     """Render and return the 404 error template."""
     return render_template("404.mako"), 404
-
-if __name__ == "__main__":
-    app.run(debug=True, port=8080)