diff --git a/src/tools/miri/tests/pass/dyn-star.rs b/src/tools/miri/tests/pass/dyn-star.rs
index 16a8cec6cda..1fac16352a4 100644
--- a/src/tools/miri/tests/pass/dyn-star.rs
+++ b/src/tools/miri/tests/pass/dyn-star.rs
@@ -1,5 +1,8 @@
 #![feature(dyn_star)]
 #![allow(incomplete_features)]
+#![feature(custom_inner_attributes)]
+// rustfmt destroys `dyn* Trait` syntax
+#![rustfmt::skip]
 
 use std::fmt::{Debug, Display};