diff --git a/src/aiida/common/pydantic.py b/src/aiida/common/pydantic.py
index 4973a44bdf..2fa3d2bd68 100644
--- a/src/aiida/common/pydantic.py
+++ b/src/aiida/common/pydantic.py
@@ -14,7 +14,7 @@ def MetadataField(  # noqa: N802
     short_name: str | None = None,
     option_cls: t.Any | None = None,
     **kwargs,
-) -> t.Any | None:
+):
     """Return a :class:`pydantic.fields.Field` instance with additional metadata.
 
     .. code-block:: python
diff --git a/src/aiida/orm/nodes/data/list.py b/src/aiida/orm/nodes/data/list.py
index 44a14af0ca..d2c0857b35 100644
--- a/src/aiida/orm/nodes/data/list.py
+++ b/src/aiida/orm/nodes/data/list.py
@@ -82,7 +82,7 @@ def remove(self, value):
             self.set_list(data)
         return item
 
-    def pop(self, index: int = 0) -> Any:
+    def pop(self, index: int = -1) -> Any:
         """Remove and return item at index (default last)."""
         data = self.get_list()
         item = data.pop(index)