diff --git a/autoPyTorch/datasets/resampling_strategy.py b/autoPyTorch/datasets/resampling_strategy.py
index 860adadaa..1c8fea5fd 100644
--- a/autoPyTorch/datasets/resampling_strategy.py
+++ b/autoPyTorch/datasets/resampling_strategy.py
@@ -64,6 +64,7 @@ def is_stratified(self) -> bool:
 
 
 class HoldoutValTypes(IntEnum):
+    """TODO: change to enum using functools.partial"""
     """The type of hold out validation (refer to CrossValTypes' doc-string)"""
     holdout_validation = 6
     stratified_holdout_validation = 7