diff --git a/src/cpu_dispatch.rs b/src/cpu_dispatch.rs
index 2c3409c16..01c28c31b 100644
--- a/src/cpu_dispatch.rs
+++ b/src/cpu_dispatch.rs
@@ -24,6 +24,7 @@ pub enum TypedBufGuard<'a, T: ?Sized> {
 }
 
 pub enum TypedBufGuardMut<'a, T: ?Sized> {
+    #[allow(dead_code)]
     Slice(&'a mut T),
     Interior(RefMut<'a, T>),
 }