diff --git a/custom_components/garbage_collection/calendar.py b/custom_components/garbage_collection/calendar.py
index 9b3d0ed..591df50 100644
--- a/custom_components/garbage_collection/calendar.py
+++ b/custom_components/garbage_collection/calendar.py
@@ -18,7 +18,7 @@ async def async_setup_entry(
     _: HomeAssistant, config_entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     # pylint: disable=unused-argument
-    """Add calendar entity to HA"""
+    """Add calendar entity to HA."""
     async_add_entities([GarbageCollectionCalendar()], True)