diff --git a/lindi/LindiH5pyFile/LindiH5pyDataset.py b/lindi/LindiH5pyFile/LindiH5pyDataset.py
index 5973739..598279a 100644
--- a/lindi/LindiH5pyFile/LindiH5pyDataset.py
+++ b/lindi/LindiH5pyFile/LindiH5pyDataset.py
@@ -38,6 +38,8 @@ def __init__(self, _dataset_object: Union[h5py.Dataset, zarr.Array], _file: "Lin
             compound_dtype_obj = _dataset_object.attrs.get("_COMPOUND_DTYPE", None)
             if compound_dtype_obj is not None:
                 assert isinstance(compound_dtype_obj, list)
+                # compound_dtype_obj is a list of tuples (name, dtype)
+                # where dtype == "<REFERENCE>" if it represents an HDF5 reference
                 for i in range(len(compound_dtype_obj)):
                     if compound_dtype_obj[i][1] == '<REFERENCE>':
                         compound_dtype_obj[i][1] = h5py.special_dtype(ref=h5py.Reference)
diff --git a/lindi/LindiH5pyFile/LindiH5pyFile.py b/lindi/LindiH5pyFile/LindiH5pyFile.py
index afe0498..eba0e81 100644
--- a/lindi/LindiH5pyFile/LindiH5pyFile.py
+++ b/lindi/LindiH5pyFile/LindiH5pyFile.py
@@ -42,7 +42,7 @@ def from_reference_file_system(rfs: Union[dict, str], mode: Literal["r", "r+"] =
             path), the file itself will not be modified on changes, but the
             internal in-memory representation will be modified. Use
             to_reference_file_system() to export the updated reference file
-            system.
+            system to the same file or a new file.
         """
         if isinstance(rfs, str):
             if rfs.startswith("http") or rfs.startswith("https"):
diff --git a/lindi/LindiH5pyFile/LindiH5pyGroup.py b/lindi/LindiH5pyFile/LindiH5pyGroup.py
index 89d303f..e9f430d 100644
--- a/lindi/LindiH5pyFile/LindiH5pyGroup.py
+++ b/lindi/LindiH5pyFile/LindiH5pyGroup.py
@@ -58,7 +58,7 @@ def __getitem__(self, name):
                 if soft_link is not None:
                     link_path = soft_link['path']
                     target_item = self._file.get(link_path)
-                    if not isinstance(target_item, LindiH5pyGroup) and not isinstance(target_item, LindiH5pyDataset):
+                    if not isinstance(target_item, (LindiH5pyGroup, LindiH5pyDataset)):
                         raise Exception(
                             f"Expected a group or dataset at {link_path} but got {type(target_item)}"
                         )