diff --git a/src/safeds/data/tabular/containers/_time_series.py b/src/safeds/data/tabular/containers/_time_series.py
index 8e033f1a8..c1b4297b8 100644
--- a/src/safeds/data/tabular/containers/_time_series.py
+++ b/src/safeds/data/tabular/containers/_time_series.py
@@ -49,7 +49,8 @@ def _from_tagged_table(
         tagged_table: TaggedTable,
         time_name: str,
     ) -> TimeSeries:
-        """Create a time series from a tagged table
+        """Create a time series from a tagged table.
+
         Parameters
         ----------
         table : TaggedTable
diff --git a/tests/helpers/__init__.py b/tests/helpers/__init__.py
index 1cc33cdda..fae87fed4 100644
--- a/tests/helpers/__init__.py
+++ b/tests/helpers/__init__.py
@@ -2,4 +2,4 @@
 from ._resources import resolve_resource_path
 from ._assertions import assert_that_time_series_are_equal
 
-__all__ = ["assert_that_tables_are_close", "assert_that_tagged_tables_are_equal", "resolve_resource_path"]
+__all__ = ["assert_that_tables_are_close", "assert_that_tagged_tables_are_equal", "resolve_resource_path", "assert_that_time_series_are_equal"]