diff --git a/aim/services.py b/aim/services.py
index c293758..a466d79 100644
--- a/aim/services.py
+++ b/aim/services.py
@@ -104,10 +104,10 @@ class Services:
     logger=structlog.get_logger(),
     mysql_database=sa.engine.URL.create(
         drivername="mysql+mysqldb",
-        username=os.environ["MARIADB_USER"],
-        password=os.environ["MARIADB_PASSWORD"],
-        host=os.environ["DATABASE_HOST"],
-        database=os.environ["MARIADB_DATABASE"],
+        username=os.getenv("MARIADB_USER") or "user",
+        password=os.getenv("MARIADB_PASSWORD") or "password",
+        host=os.getenv("DATABASE_HOST") or "database",
+        database=os.getenv("MARIADB_DATABASE") or "database",
     ),
     test_database="sqlite:///:memory:",
     ci_on=os.getenv("CI"),