diff --git a/src/borg/archiver/rcompress_cmd.py b/src/borg/archiver/rcompress_cmd.py
index c8558f7ee..7b27b83bc 100644
--- a/src/borg/archiver/rcompress_cmd.py
+++ b/src/borg/archiver/rcompress_cmd.py
@@ -123,8 +123,8 @@ def checkpoint_func():
 
         if not isinstance(repository, (Repository3, RemoteRepository3)):
             # start a new transaction
-            data = repository.get(Manifest.MANIFEST_ID)
-            repository.put(Manifest.MANIFEST_ID, data)
+            data = repository.get_manifest()
+            repository.put_manifest(data)
             uncommitted_chunks += 1
 
         pi = ProgressIndicatorPercent(