diff --git a/eocalc/methods/naive.py b/eocalc/methods/naive.py
index 316bf5b1ed87af457ec7063b7de421d0cbfcf830..d8c7ab2c374f18dd1d53266971f8f976df0fb2a8 100644
--- a/eocalc/methods/naive.py
+++ b/eocalc/methods/naive.py
@@ -30,6 +30,7 @@ TEMIS_CELL_UNCERTAINTY = 1000
 
 
 class TropomiMonthlyMeanAggregator(EOEmissionCalculator):
+    """Method to calculate NO2 emissions from TEMIS monthly Tropomi data."""
 
     @staticmethod
     def minimum_area_size() -> int: