diff --git a/example/mini_core.rs b/example/mini_core.rs
index a79909ce0c8..47db7ee3691 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -8,6 +8,7 @@
     rustc_attrs,
     transparent_unions,
     auto_traits,
+    freeze_impls,
     thread_local
 )]
 #![no_core]