diff --git a/pvnet/data/utils.py b/pvnet/data/utils.py
index f3a0d64c..be173f60 100644
--- a/pvnet/data/utils.py
+++ b/pvnet/data/utils.py
@@ -1,3 +1,4 @@
+"""Utils common between Wind and PV datamodules"""
 import numpy as np
 import torch
 from ocf_datapipes.utils.consts import BatchKey