diff --git a/endpoints/v2/blob.py b/endpoints/v2/blob.py
index f118566a3..adc59269c 100644
--- a/endpoints/v2/blob.py
+++ b/endpoints/v2/blob.py
@@ -224,7 +224,7 @@ def _upload_chunk(namespace, repo_name, upload_uuid):
 
     piece_hasher = None
     # TODO remove this when all in-progress blob uploads reliably contain piece hashes
-    if start_offset == 0 and found.piece_sha_state is not None:
+    if start_offset == 0 or found.piece_sha_state is not None:
       piece_hasher = PieceHasher(app.config['TORRENT_PIECE_SIZE'], start_offset, found.piece_hashes,
                                  found.piece_sha_state)
       input_fp = wrap_with_handler(input_fp, piece_hasher.update)