diff --git a/vhost_user_block/src/lib.rs b/vhost_user_block/src/lib.rs
index 8530aa36a..d9a907aa9 100644
--- a/vhost_user_block/src/lib.rs
+++ b/vhost_user_block/src/lib.rs
@@ -51,7 +51,6 @@ const POLL_QUEUE_US: u128 = 50;
 type Result<T> = std::result::Result<T, Error>;
 type VhostUserBackendResult<T> = std::result::Result<T, std::io::Error>;
 
-#[allow(dead_code)]
 #[derive(Error, Debug)]
 enum Error {
     /// Failed to create kill eventfd