diff --git a/corrlib/tracker.py b/corrlib/tracker.py
index 5cc281c..e535b03 100644
--- a/corrlib/tracker.py
+++ b/corrlib/tracker.py
@@ -114,7 +114,7 @@ def unlock(path: str, file: str) -> None:
     """
     tracker = get_tracker(path)
     if tracker == 'datalad':
-        dl.unlock(file, dataset=path)
+        dl.unlock(os.path.join(path, file), dataset=path)
     elif tracker == 'None':
         Warning("Tracker 'None' does not implement unlock.")
         pass