diff --git a/hw/src/ledger.rs b/hw/src/ledger.rs
index fca1d0c3a..bc449e251 100644
--- a/hw/src/ledger.rs
+++ b/hw/src/ledger.rs
@@ -271,7 +271,7 @@ impl Manager {
 					chunk_size += size;
 				}
 				trace!("writing {:?}", &hid_chunk[..]);
-				let n = handle.write(&hid_chunk[0..chunk_size])?;
+				let n = handle.write(&hid_chunk[..])?;
 				if n < chunk_size {
 					return Err(Error::Protocol("Write data size mismatch"));
 				}