diff --git a/pyonedrive/py_onedrive.py b/pyonedrive/py_onedrive.py
index a9257b4..1e14657 100644
--- a/pyonedrive/py_onedrive.py
+++ b/pyonedrive/py_onedrive.py
@@ -247,7 +247,7 @@ def get_view_changes_generator(self, drive, change_token=None):
             if '@changes.resync' in response:
                 # server is not able to provide delta.
                 # => Force full synchronization
-                params = None
+                params = {}
                 continue
             params['token'] = response['@changes.token']
             if not response.get("@changes.hasMoreChanges", False):