diff --git a/doc/source/changelog.rst b/doc/source/changelog.rst
index f667b7a..9f045ef 100644
--- a/doc/source/changelog.rst
+++ b/doc/source/changelog.rst
@@ -5,6 +5,7 @@ Changelog
 
 X.Y.Z (DD-MM-YYYY)
 ------------------
+* Change ``partition_chunks`` to ``preferred_chunks`` (:pr:`44`)
 * Allow arcae to vary in the 0.2.x range (:pr:`42`)
 * Pin xarray to 2024.9.0 (:pr:`42`)
 * Add test case for irregular grids (:pr:`39`, :pr:`40`, :pr:`41`)
diff --git a/doc/source/tutorial.rst b/doc/source/tutorial.rst
index 97cd33c..8a6b9a7 100644
--- a/doc/source/tutorial.rst
+++ b/doc/source/tutorial.rst
@@ -116,7 +116,7 @@ to specify different chunking setups for each partition.
       (("DATA_DESC_ID", 1),): {"time": 3, "frequency": 2}})
 
 See the ``preferred_chunks`` argument of
-:meth:`xarray_ms.backend.msv2.entrypoint.MSv2EntryPoint.open_datatree`
+:meth:`~xarray_ms.backend.msv2.entrypoint.MSv2EntryPoint.open_datatree`
 for more information.
 
 .. ipython:: python
diff --git a/xarray_ms/backend/msv2/entrypoint.py b/xarray_ms/backend/msv2/entrypoint.py
index 8ec2547..5356fdc 100644
--- a/xarray_ms/backend/msv2/entrypoint.py
+++ b/xarray_ms/backend/msv2/entrypoint.py
@@ -351,9 +351,12 @@ def open_datatree(
             "D=0,F=1": {{"time": 20, "frequency": 32}},
           }}
 
-        .. note:: This argument should be used in conjunction with
-          the reserved ``chunks`` argument used by xarray to control chunking
-          in Datasets and DataTrees. See preferred_chunk_sizes_ for more information.
+        .. note:: xarray's reserved ``chunks`` argument must be specified in order
+          to enable this functionality and enable fine-grained chunking
+          in Datasets and DataTrees.
+          See xarray's backend documentation on
+          `Preferred chunk sizes <preferred_chunk_sizes_>`_
+          for more information.
 
       drop_variables: Variables to drop from the dataset.
       partition_columns: The columns to use for partitioning the Measurement set.