diff --git a/dropboxdrivefs/core.py b/dropboxdrivefs/core.py
index 5e8ba58..310a4ff 100644
--- a/dropboxdrivefs/core.py
+++ b/dropboxdrivefs/core.py
@@ -269,7 +269,7 @@ def _upload_chunk(self, final=False):
             )
         else:
 
-            self.dbx.files_upload_session_append_v2(
+            self.dbx.files_upload_session_append(
                 self.buffer.getvalue(), self.cursor.session_id, self.cursor.offset
             )