diff --git a/backend/db/extensions.py b/backend/db/extensions.py
index ad57b51b..3b59d0cd 100644
--- a/backend/db/extensions.py
+++ b/backend/db/extensions.py
@@ -3,7 +3,6 @@
 from fastapi_sqlalchemy import SQLAlchemy
 from sqlalchemy import create_engine
 
-
 db_host = os.getenv("DB_HOST", "localhost")
 db_port = os.getenv("DB_PORT", "5432")
 db_user = os.getenv("DB_USERNAME", "postgres")
diff --git a/backend/db/implementation/SqlSubjectDAO.py b/backend/db/implementation/SqlSubjectDAO.py
index 388e0704..40e59f10 100644
--- a/backend/db/implementation/SqlSubjectDAO.py
+++ b/backend/db/implementation/SqlSubjectDAO.py
@@ -1,8 +1,8 @@
 from db.errors.database_errors import ItemNotFoundError, UniqueConstraintError
+from db.extensions import db
 from db.interface.SubjectDAO import SubjectDAO
 from db.models.models import Student, Subject, Teacher
 from domain.models.SubjectDataclass import SubjectDataclass
-from db.extensions import db
 
 
 class SqlSubjectDAO(SubjectDAO):
diff --git a/backend/db/implementation/SqlTeacherDAO.py b/backend/db/implementation/SqlTeacherDAO.py
index 8f55ee5f..9623cb3e 100644
--- a/backend/db/implementation/SqlTeacherDAO.py
+++ b/backend/db/implementation/SqlTeacherDAO.py
@@ -1,8 +1,8 @@
 from sqlalchemy import select
 
 from db.errors.database_errors import ItemNotFoundError
-from db.interface.TeacherDAO import TeacherDAO
 from db.extensions import db
+from db.interface.TeacherDAO import TeacherDAO
 from db.models.models import Teacher
 from domain.models.TeacherDataclass import TeacherDataclass