diff --git a/advanced/firmware/src/bin/rtic-hello.rs b/advanced/firmware/src/bin/rtic-hello.rs
index 9f823e9..055f490 100644
--- a/advanced/firmware/src/bin/rtic-hello.rs
+++ b/advanced/firmware/src/bin/rtic-hello.rs
@@ -14,7 +14,7 @@ const APP: () = {
     }
 
     #[idle]
-    fn idle(_cx: idle::Context) -> ! {
+    fn main(_cx: main::Context) -> ! {
         log::info!("world!");
 
         loop {