diff --git a/example/mini_core_hello_world.rs b/example/mini_core_hello_world.rs
index 40a1ad22c0e..9827e299f2a 100644
--- a/example/mini_core_hello_world.rs
+++ b/example/mini_core_hello_world.rs
@@ -98,6 +98,9 @@ fn start<T: Termination + 'static>(
 }
 
 static mut NUM: u8 = 6 * 7;
+
+// FIXME: Use `SyncUnsafeCell` instead of allowing `static_mut_ref` lint
+#[allow(static_mut_ref)]
 static NUM_REF: &'static u8 = unsafe { &NUM };
 
 macro_rules! assert {