diff --git a/src/main.cpp b/src/main.cpp
index d5de4aa..631e74b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,12 @@
-#include <iostream>
 #include "../include/crow_all.h"
+#include <iostream>
 
 int main() {
   std::cout << "Hello World!" << std::endl;
+
+  crow::SimpleApp app;
+
+  CROW_ROUTE(app, "/")([]() { return "Hello world"; });
+
+  app.port(3000).multithreaded().run();
 }