diff --git a/setup.py b/setup.py
index c1c7bda..60c93c4 100755
--- a/setup.py
+++ b/setup.py
@@ -89,7 +89,7 @@ setup(
     description='Authentic2 Fedict plugin',
     author="Entr'ouvert",
     url='https://repos.entrouvert.org/authentic2-auth-fedict.git',
-    author_email="info@entrouvert.com",
+    author_email='info@entrouvert.com',
     packages=find_packages('src'),
     package_dir={
         '': 'src',
diff --git a/src/authentic2_auth_fedict/fields.py b/src/authentic2_auth_fedict/fields.py
index cb0c7b6..e4827d8 100644
--- a/src/authentic2_auth_fedict/fields.py
+++ b/src/authentic2_auth_fedict/fields.py
@@ -137,7 +137,7 @@ class NumHouseField(forms.CharField):
         if not value:
             return
         try:
-            if not re.match("^[1-9][0-9]*$", value):
+            if not re.match('^[1-9][0-9]*$', value):
                 raise ValueError()
         except ValueError:
             raise forms.ValidationError(getattr(settings, 'A2_NUMHOUSE_ERROR_MESSAGE', _('Invalid format')))
@@ -149,7 +149,7 @@ class NumPhoneField(forms.CharField):
         if not value:
             return
         try:
-            if not re.match("^(0|\\+|00)(\\d{8,})", value):
+            if not re.match('^(0|\\+|00)(\\d{8,})', value):
                 raise ValueError()
         except ValueError:
             raise forms.ValidationError(getattr(settings, 'A2_NUMPHONE_ERROR_MESSAGE', _('Invalid format')))
diff --git a/tests/settings.py b/tests/settings.py
index 47ebe1e..94718c1 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -19,21 +19,21 @@ if 'postgres' in DATABASES['default']['ENGINE']:
 LANGUAGE_CODE = 'en'
 A2_AUTH_SAML_ENABLE = False
 
-MELLON_ADAPTER = ["authentic2_auth_fedict.adapters.AuthenticAdapter"]
-MELLON_LOGIN_URL = "fedict-login"
-MELLON_PUBLIC_KEYS = ["./tests/saml.crt"]
-MELLON_PRIVATE_KEY = "./tests/saml.key"
+MELLON_ADAPTER = ['authentic2_auth_fedict.adapters.AuthenticAdapter']
+MELLON_LOGIN_URL = 'fedict-login'
+MELLON_PUBLIC_KEYS = ['./tests/saml.crt']
+MELLON_PRIVATE_KEY = './tests/saml.key'
 MELLON_IDENTITY_PROVIDERS = [
     {
-        "METADATA": open("./tests/metadata.xml").read(),
-        "ENTITY_ID": "https://idp.com/",
-        "SLUG": "idp",
+        'METADATA': open('./tests/metadata.xml').read(),
+        'ENTITY_ID': 'https://idp.com/',
+        'SLUG': 'idp',
     },
 ]
 
 MELLON_ATTRIBUTE_MAPPING = {
-    "last_name": "{attributes[surname][0]}",
-    "first_name": "{attri,butes[givenName][0]}",
+    'last_name': '{attributes[surname][0]}',
+    'first_name': '{attri,butes[givenName][0]}',
 }
 
 INSTALLED_APPS += ('authentic2_auth_fedict',)
diff --git a/tests/test_all.py b/tests/test_all.py
index 0f29b77..6ff64d6 100644
--- a/tests/test_all.py
+++ b/tests/test_all.py
@@ -194,11 +194,11 @@ def test_eid_unlink(app, settings, issuer, user, authenticator):
     )
 
     response = login(app, user, path='/accounts/', password=user.username)
-    assert "Unlink my account" in response.text
+    assert 'Unlink my account' in response.text
     app.get('/accounts/fedict/unlink/').follow()
 
     response = app.get('/accounts/')
-    assert "Link my account to my eID card" in response.text
+    assert 'Link my account to my eID card' in response.text
 
 
 def test_provision_new_attributes_verified(app, settings, issuer, user):
@@ -347,7 +347,7 @@ def test_fedict_authenticator_data_migration(settings):
     FedictAuthenticator = old_apps.get_model(app, 'FedictAuthenticator')
 
     settings.AUTH_FRONTENDS_KWARGS = {
-        "fedict": {"priority": 3, "show_condition": "'backoffice' not in login_hint"}
+        'fedict': {'priority': 3, 'show_condition': "'backoffice' not in login_hint"}
     }
     settings.A2_AUTH_FEDICT_ENABLE = True