diff --git a/nc_py_api/files/files.py b/nc_py_api/files/files.py
index 8b356c2a..515dcee3 100644
--- a/nc_py_api/files/files.py
+++ b/nc_py_api/files/files.py
@@ -485,7 +485,8 @@ def __upload_stream(self, path: str, fp, chunk_size: int) -> FsNode:
             response = self._session.adapter_dav.request("MKCOL", _dav_path)
         check_error(response)
         try:
-            start_bytes = end_bytes = chunk_number = 0
+            start_bytes = end_bytes = 0
+            chunk_number = 1
             while True:
                 piece = fp.read(chunk_size)
                 if not piece: