diff --git a/server/src/main.rs b/server/src/main.rs
index 84703e4..66002c1 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -1,9 +1,10 @@
+// SPDX-License-Identifier: GPL-3.0-Only
+// Copyright (C) 2024 Luke Harding
+
 use std::env;
 
 use actix_web::{App, get, HttpResponse, HttpServer, Responder};
 
-use crate::util::warn_println;
-
 mod util;
 
 #[actix_web::main]
@@ -19,7 +20,7 @@ async fn main() -> std::io::Result<()> {
         if let Ok(env_port) = env_port.parse::<u16>() {
             port = env_port;
         } else {
-            warn_println("Failed to parse PORT env variable using default value.");
+            util::warn_println("Failed to parse PORT env variable using default value.");
         }
     }
 
diff --git a/server/src/util.rs b/server/src/util.rs
index cfbddaf..151e20a 100644
--- a/server/src/util.rs
+++ b/server/src/util.rs
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-3.0-Only
+// Copyright (C) 2024 Luke Harding
+
 use colored::Colorize;
 
 pub fn print_copyright_notice() {