diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c685f8bdc2715c432ff8213afaab6fcba2cea08c..7909394b726669110cc3faf7d6acf7a85cb8f8fa 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,15 +7,15 @@ variables:
   POSTGRES_DB: database_name
 
 cache:
-  key: "$CI_JOB_NAME-$CI_COMMIT_REF_SLUG"
+  key: '$CI_JOB_NAME-$CI_COMMIT_REF_SLUG'
   paths:
     - .cache/pip
     - venv/
 
 before_script:
-  - python -V      
+  - python -V
   - python3 -m venv venv
-  - source venv/bin/activate  
+  - source venv/bin/activate
   - pip install -r requirements/production.txt
 
 stages:
@@ -24,14 +24,14 @@ stages:
 Flake8:
   stage: Build
   script:
-    - flake8 --max-line-length=125 --exclude=src/kszkepzes,migrations,venv
+    - flake8 --max-line-length=125 --exclude=src/kszkepzes,migrations,venv,env
 
 Test:
   stage: Build
   variables:
-    DATABASE_URL: "postgresql://postgres:postgres@postgres:5432/$POSTGRES_DB"
-    SECRET_KEY: "secret"
-    AUTHSCH_KEY: "secret"
-    AUTHSCH_SECRET: "secret"
+    DATABASE_URL: 'postgresql://postgres:postgres@postgres:5432/$POSTGRES_DB'
+    SECRET_KEY: 'secret'
+    AUTHSCH_KEY: 'secret'
+    AUTHSCH_SECRET: 'secret'
   script:
-  - python src/manage.py test
+    - python src/manage.py test
diff --git a/src/authsch/authentication.py b/src/authsch/authentication.py
index b7e105ad0ce84b42d37440064dd17785425491d9..86d633478edb207219b12f991a41c0398e5d1580 100644
--- a/src/authsch/authentication.py
+++ b/src/authsch/authentication.py
@@ -21,7 +21,7 @@ class AuthSCHOAuth2(BaseOAuth2):
     def get_user_details(self, response):
         """Return user details from AuthSCH account"""
         return {
-            'username': response.get('linkedAccounts').get('schacc'), 
+            'username': response.get('linkedAccounts').get('schacc'),
             'email': response.get('mail'),
             'first_name': response.get('givenName'),
             'last_name': response.get('sn')
diff --git a/src/common/email.py b/src/common/email.py
index 838bf7f82e0ee173533cf312f93a9d214a5fcf5b..7273ce6bcdbe40f9a43816e81084f5578cda6479 100644
--- a/src/common/email.py
+++ b/src/common/email.py
@@ -2,8 +2,6 @@ from django.core.mail import send_mail
 import codecs
 import sys
 
-
-
 sender_email = 'noreply@ujonc.kszk.bme.hu'
 link = 'https://ujonc.kszk.bme.hu/homework'
 
@@ -13,6 +11,7 @@ def read_email(name):
         data = myfile.read()
     return data
 
+
 def send_out_mail(subject, message, sender_email, receiver_email):
     if 'runserver' in sys.argv:
         # It is in development