diff --git a/src/backup/read_chunk.rs b/src/backup/read_chunk.rs
index 2f344e1d..9ad3478e 100644
--- a/src/backup/read_chunk.rs
+++ b/src/backup/read_chunk.rs
@@ -17,6 +17,7 @@ pub trait ReadChunk {
     fn read_chunk(&mut self, digest: &[u8; 32]) -> Result<Vec<u8>, Error>;
 }
 
+#[derive(Clone)]
 pub struct LocalChunkReader {
     store: Arc<DataStore>,
     crypt_config: Option<Arc<CryptConfig>>,