diff --git a/src/main.rs b/src/main.rs
index 458eb1f..f04ad1d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 use actix_web::{get, post, web, App, HttpResponse, HttpServer, Responder};
+mod calc;
 
 use serde::Deserialize;
 #[derive(Deserialize)]