diff --git a/src/api2/tape/restore.rs b/src/api2/tape/restore.rs
index f959a856..1b0bc03f 100644
--- a/src/api2/tape/restore.rs
+++ b/src/api2/tape/restore.rs
@@ -1121,16 +1121,13 @@ fn restore_archive<'a>(
                 };
 
                 if let Some(chunks) = chunks {
-                    catalog.start_chunk_archive(
+                    catalog.register_chunk_archive(
                         Uuid::from(header.uuid),
                         current_file_number,
                         &source_datastore,
+                        &chunks[..],
                     )?;
-                    for digest in chunks.iter() {
-                        catalog.register_chunk(&digest)?;
-                    }
                     task_log!(worker, "register {} chunks", chunks.len());
-                    catalog.end_chunk_archive()?;
                     catalog.commit_if_large()?;
                 }
                 return Ok(());
diff --git a/src/tape/media_catalog.rs b/src/tape/media_catalog.rs
index 65b52a42..086c8a7d 100644
--- a/src/tape/media_catalog.rs
+++ b/src/tape/media_catalog.rs
@@ -503,10 +503,26 @@ impl MediaCatalog {
         Ok(())
     }
 
+    /// Register a chunk archive
+    pub fn register_chunk_archive(
+        &mut self,
+        uuid: Uuid, // Uuid form MediaContentHeader
+        file_number: u64,
+        store: &str,
+        chunk_list: &[[u8; 32]],
+    ) -> Result<(), Error> {
+        self.start_chunk_archive(uuid, file_number, store)?;
+        for digest in chunk_list {
+            self.register_chunk(digest)?;
+        }
+        self.end_chunk_archive()?;
+        Ok(())
+    }
+
     /// Register a chunk
     ///
     /// Only valid after start_chunk_archive.
-    pub fn register_chunk(
+    fn register_chunk(
         &mut self,
         digest: &[u8;32],
     ) -> Result<(), Error> {
@@ -557,7 +573,7 @@ impl MediaCatalog {
     }
 
     /// Start a chunk archive section
-    pub fn start_chunk_archive(
+    fn start_chunk_archive(
         &mut self,
         uuid: Uuid, // Uuid form MediaContentHeader
         file_number: u64,
@@ -606,7 +622,7 @@ impl MediaCatalog {
     }
 
     /// End a chunk archive section
-    pub fn end_chunk_archive(&mut self) -> Result<(), Error> {
+    fn end_chunk_archive(&mut self) -> Result<(), Error> {
 
         match self.current_archive.take() {
             None => bail!("end_chunk_archive failed: not started"),
diff --git a/src/tape/pool_writer/catalog_set.rs b/src/tape/pool_writer/catalog_set.rs
index fbca3e97..d5903413 100644
--- a/src/tape/pool_writer/catalog_set.rs
+++ b/src/tape/pool_writer/catalog_set.rs
@@ -97,11 +97,7 @@ impl CatalogSet {
     ) -> Result<(), Error> {
         match self.catalog {
             Some(ref mut catalog) => {
-                catalog.start_chunk_archive(uuid, file_number, store)?;
-                for digest in chunk_list {
-                    catalog.register_chunk(digest)?;
-                }
-                catalog.end_chunk_archive()?;
+                catalog.register_chunk_archive(uuid, file_number, store, chunk_list)?;
             }
             None => bail!("no catalog loaded - internal error"),
         }