diff --git a/yoda_eus/app.py b/yoda_eus/app.py
index 1cc84f5..2590b62 100644
--- a/yoda_eus/app.py
+++ b/yoda_eus/app.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 
 __copyright__ = 'Copyright (c) 2023, Utrecht University'
-__license__ = 'GPLv3, see LICENSE'
+__license__   = 'GPLv3, see LICENSE'
 
 import secrets
 import urllib.parse
diff --git a/yoda_eus/mail.py b/yoda_eus/mail.py
index 991ef8f..13208b3 100644
--- a/yoda_eus/mail.py
+++ b/yoda_eus/mail.py
@@ -1,5 +1,5 @@
 __copyright__ = 'Copyright (c) 2023, Utrecht University'
-__license__ = 'GPLv3, see LICENSE'
+__license__   = 'GPLv3, see LICENSE'
 
 import email
 import os
diff --git a/yoda_eus/password_complexity.py b/yoda_eus/password_complexity.py
index 2ab51b6..87a0b59 100644
--- a/yoda_eus/password_complexity.py
+++ b/yoda_eus/password_complexity.py
@@ -1,5 +1,5 @@
 __copyright__ = 'Copyright (c) 2023, Utrecht University'
-__license__ = 'GPLv3, see LICENSE'
+__license__   = 'GPLv3, see LICENSE'
 
 import string
 from typing import List
diff --git a/yoda_eus/tests/test_integration.py b/yoda_eus/tests/test_integration.py
index 69abcc9..3009d96 100644
--- a/yoda_eus/tests/test_integration.py
+++ b/yoda_eus/tests/test_integration.py
@@ -1,5 +1,5 @@
 __copyright__ = 'Copyright (c) 2023, Utrecht University'
-__license__ = 'GPLv3, see LICENSE'
+__license__   = 'GPLv3, see LICENSE'
 
 import base64
 
diff --git a/yoda_eus/tests/test_unit.py b/yoda_eus/tests/test_unit.py
index 0624148..e0045c8 100644
--- a/yoda_eus/tests/test_unit.py
+++ b/yoda_eus/tests/test_unit.py
@@ -1,5 +1,5 @@
-__copyright__ = "Copyright (c) 2023, Utrecht University"
-__license__   = "GPLv3, see LICENSE"
+__copyright__ = 'Copyright (c) 2023, Utrecht University'
+__license__   = 'GPLv3, see LICENSE'
 
 import string
 from unittest.mock import patch
diff --git a/yoda_eus/util.py b/yoda_eus/util.py
index 65ff776..36d8912 100644
--- a/yoda_eus/util.py
+++ b/yoda_eus/util.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 
-__copyright__ = "Copyright (c) 2021-2023, Utrecht University"
-__license__ = "GPLv3, see LICENSE"
+__copyright__ = 'Copyright (c) 2021-2023, Utrecht University'
+__license__   = 'GPLv3, see LICENSE'
 
 from os import path
 from re import fullmatch