diff --git a/agb/examples/output.rs b/agb/examples/output.rs
index 88b60519..0869f382 100644
--- a/agb/examples/output.rs
+++ b/agb/examples/output.rs
@@ -1,19 +1,17 @@
 #![no_std]
 #![no_main]
 
-use core::cell::RefCell;
-
-use bare_metal::{CriticalSection, Mutex};
+use agb::sync::Static;
 
 #[agb::entry]
 fn main(_gba: agb::Gba) -> ! {
-    let count = Mutex::new(RefCell::new(0));
+    let count = Static::new(0);
     let _a = agb::interrupt::add_interrupt_handler(
         agb::interrupt::Interrupt::VBlank,
-        |key: CriticalSection| {
-            let mut count = count.borrow(key).borrow_mut();
-            agb::println!("Hello, world, frame = {}", *count);
-            *count += 1;
+        |_| {
+            let cur_count = count.read();
+            agb::println!("Hello, world, frame = {}", cur_count);
+            count.write(cur_count + 1);
         },
     );
     loop {}