diff --git a/app/main.py b/app/main.py
index 9f30ba0..09ec4d1 100644
--- a/app/main.py
+++ b/app/main.py
@@ -49,7 +49,7 @@ logging.basicConfig(format='[{levelname:^7}] [{module:^15}] {message}', style='{
 logger = logging.getLogger(__name__)
 logger.setLevel(LOG_LEVEL)
 logging.getLogger('util').setLevel(LOG_LEVEL)
-logging.getLogger('NV').setLevel(LOG_LEVEL)
+logging.getLogger('DriverMatrix').setLevel(LOG_LEVEL)
 
 
 # FastAPI
diff --git a/app/orm.py b/app/orm.py
index bb2e855..0f50fb0 100644
--- a/app/orm.py
+++ b/app/orm.py
@@ -11,7 +11,7 @@ from sqlalchemy.engine import Engine
 from sqlalchemy.orm import sessionmaker, declarative_base, Session, relationship
 from sqlalchemy.schema import CreateTable
 
-from util import NV, PrivateKey, PublicKey
+from util import DriverMatrix, PrivateKey, PublicKey, DriverMatrix
 
 logging.basicConfig()
 logger = logging.getLogger(__name__)
@@ -148,7 +148,7 @@ class Origin(Base):
         return f'Origin(origin_ref={self.origin_ref}, hostname={self.hostname})'
 
     def serialize(self) -> dict:
-        _ = NV().find(self.guest_driver_version)
+        _ = DriverMatrix().find(self.guest_driver_version)
 
         return {
             'origin_ref': self.origin_ref,
diff --git a/app/util.py b/app/util.py
index c6c93d0..7d4694d 100644
--- a/app/util.py
+++ b/app/util.py
@@ -104,7 +104,7 @@ class DriverMatrix:
             self.log.debug(f'Successfully loaded "{DriverMatrix.__DRIVER_MATRIX_FILENAME}".')
         except Exception as e:
             DriverMatrix.__DRIVER_MATRIX = {}  # init empty dict to not try open file everytime, just when restarting app
-            # self.log.warning(f'Failed to load "{NV.__DRIVER_MATRIX_FILENAME}": {e}')
+            # self.log.warning(f'Failed to load "{DriverMatrix.__DRIVER_MATRIX_FILENAME}": {e}')
 
     @staticmethod
     def find(version: str) -> dict | None: