diff --git a/src/omero_zarr/raw_pixels.py b/src/omero_zarr/raw_pixels.py
index 76266b9..c49d987 100644
--- a/src/omero_zarr/raw_pixels.py
+++ b/src/omero_zarr/raw_pixels.py
@@ -209,8 +209,8 @@ def downsample_pyramid_on_disk(parent: Group, paths: List[str]) -> List[str]:
         # write to disk
         da.to_zarr(
             arr=output,
-            url=parent.store,
-            component=str(path),
+            url=image_path,
+            component=path,
             dimension_separator=parent._store._dimension_separator,
         )