diff --git a/src/database/db_manager.py b/src/database/db_manager.py
index 9df5511..8d8c931 100644
--- a/src/database/db_manager.py
+++ b/src/database/db_manager.py
@@ -37,7 +37,7 @@ def __init__(self, api_manager):
         self.DB_FOLDER = getenv("DB_FOLDER")
         if self.DB_FOLDER is None or not path.isdir(self.DB_FOLDER):
             self.logger.critical("DB_FOLDER: '%s', is not a directory", self.DB_FOLDER)
-            raise Exception(f"DB_FOLDER: '{self.DB_FOLDER}', is not a directory")
+            raise OSError(f"DB_FOLDER: '{self.DB_FOLDER}', is not a directory")
 
         # Init Connection object allowing interaction with the database
         db_file_path = path.join(self.DB_FOLDER, DB_FILE_NAME)
diff --git a/tests/test_database_manager.py b/tests/test_database_manager.py
index 293c2e2..3695666 100644
--- a/tests/test_database_manager.py
+++ b/tests/test_database_manager.py
@@ -2,7 +2,6 @@
 
 from data.rootme_api_example_data import auteurs_with_score_zero_example_data
 
-from database import DatabaseManager
 from classes import User