diff --git a/src/finam/data/tools/mask.py b/src/finam/data/tools/mask.py
index 0e65d73b010e6497957fc00023578c5c1a5c90c1..666260f0780a272ee7b64ef791ec75961ed81f8d 100644
--- a/src/finam/data/tools/mask.py
+++ b/src/finam/data/tools/mask.py
@@ -1,4 +1,4 @@
-"""Data tools for FINAM."""
+"""Mask tools for FINAM."""
 
 from enum import Enum