diff --git a/src/alloc.rs b/src/alloc.rs
index 27336da..0be634f 100644
--- a/src/alloc.rs
+++ b/src/alloc.rs
@@ -125,7 +125,6 @@ impl Mem {
 
 pub static HEAP: Heap = Heap;
 
-#[allow(missing_copy_implementations)]
 pub struct Heap;
 
 impl Heap {