diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a15edaf..3ec113f 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -13,8 +13,8 @@ Changelog
 
 **New features**
 
-- User defined data types can now define how arrays with that dtype are constructed by implementing the :func:`make_array` function.
-- User defined data types can now define how they are indexed (via `__getitem__`) by implementing the :func:`getitem` function.
+- User defined data types can now define how arrays with that dtype are constructed by implementing the ``make_array`` function.
+- User defined data types can now define how they are indexed (via ``__getitem__``) by implementing the ``getitem`` function.
 
 **Bug fixes**
 
diff --git a/ndonnx/additional/_additional.py b/ndonnx/additional/_additional.py
index b8fa841..48d7a43 100644
--- a/ndonnx/additional/_additional.py
+++ b/ndonnx/additional/_additional.py
@@ -152,7 +152,7 @@ def _getitem(x: Array, index: IndexType) -> ndx.Array:
     out = x.dtype._ops.getitem(x, index)
     if out is NotImplemented:
         raise ndx.UnsupportedOperationError(
-            f"`getitem` not implemented for `{x.dtype}`"
+            f"'getitem' not implemented for `{x.dtype}`"
         )
     return out