diff --git a/sphinx/ext/napoleon/docstring.py b/sphinx/ext/napoleon/docstring.py
index c80baecba..a11424537 100644
--- a/sphinx/ext/napoleon/docstring.py
+++ b/sphinx/ext/napoleon/docstring.py
@@ -1,8 +1,4 @@
-"""
-
-Classes for docstring parsing and formatting.
-
-"""
+"""Classes for docstring parsing and formatting."""
 
 import collections
 import inspect
diff --git a/sphinx/ext/napoleon/iterators.py b/sphinx/ext/napoleon/iterators.py
index bebd56518..9459ad4a6 100644
--- a/sphinx/ext/napoleon/iterators.py
+++ b/sphinx/ext/napoleon/iterators.py
@@ -1,8 +1,4 @@
-"""
-
-A collection of helpful iterators.
-
-"""
+"""A collection of helpful iterators."""
 
 import collections
 from typing import Any, Iterable, Optional
diff --git a/tests/test_ext_napoleon.py b/tests/test_ext_napoleon.py
index bcc0d6d23..a1b98996f 100644
--- a/tests/test_ext_napoleon.py
+++ b/tests/test_ext_napoleon.py
@@ -1,6 +1,4 @@
-"""Tests for :mod:`sphinx.ext.napoleon.__init__` module.
-
-"""
+"""Tests for :mod:`sphinx.ext.napoleon.__init__` module."""
 
 import sys
 from collections import namedtuple
diff --git a/tests/test_ext_napoleon_docstring.py b/tests/test_ext_napoleon_docstring.py
index 514276061..ed97b6351 100644
--- a/tests/test_ext_napoleon_docstring.py
+++ b/tests/test_ext_napoleon_docstring.py
@@ -1,6 +1,4 @@
-"""Tests for :mod:`sphinx.ext.napoleon.docstring` module.
-
-"""
+"""Tests for :mod:`sphinx.ext.napoleon.docstring` module."""
 
 import re
 import sys
diff --git a/tests/test_ext_napoleon_iterators.py b/tests/test_ext_napoleon_iterators.py
index e9684521e..6b80af6bf 100644
--- a/tests/test_ext_napoleon_iterators.py
+++ b/tests/test_ext_napoleon_iterators.py
@@ -1,6 +1,4 @@
-"""Tests for :mod:`sphinx.ext.napoleon.iterators` module.
-
-"""
+"""Tests for :mod:`sphinx.ext.napoleon.iterators` module."""
 
 from unittest import TestCase