diff --git a/src/s3ql/backends/comprenc.py b/src/s3ql/backends/comprenc.py
index 9ed3627e..db419bb7 100644
--- a/src/s3ql/backends/comprenc.py
+++ b/src/s3ql/backends/comprenc.py
@@ -276,6 +276,12 @@ class ComprencBackend(AbstractBackend):
             buf.seek(0)
             fh = buf
 
+        if meta_raw['compression'] == 'None' and meta_raw['encryption'] == 'None':
+            buf = io.BytesIO()
+            copyfh(fh, buf, len_)
+            buf.seek(0)
+            fh = buf
+        
         return self.backend.write_fh(key, fh, meta_raw, len_=len_ if meta_raw['compression'] == 'None'and meta_raw['encryption'] == 'None' else None)
 
     def contains(self, key):