diff --git a/app/__init__.py b/app/__init__.py
index 68c20e1..8da490d 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -1,5 +1,7 @@
 # retoor <retoor@molodetz.nl>
 
+import os
+
 from flask import Flask
 from flask import jsonify
 from flask import make_response
@@ -14,6 +16,13 @@ from src.calculator import subtract
 app = Flask(__name__)
 
 
+@app.route('/')
+def index() -> Response:
+    index_path = os.path.join(os.path.dirname(__file__), 'index.html')
+    with open(index_path) as f:
+        return make_response(f.read(), 200, {'Content-Type': 'text/html'})
+
+
 @app.route('/add', methods=['GET'])
 def add_route() -> Response:
     try: