diff --git a/main.py b/main.py
index 674662b..c8df3bd 100644
--- a/main.py
+++ b/main.py
@@ -12,9 +12,11 @@ from fastapi.staticfiles import StaticFiles
 import threading
 
 if os.environ.get("DATABASE_URL") == None:
-    os.environ["DATABASE_URL"] = "sqlite:///./wall_messages.db"
+    DATABASE_URL = "sqlite:///./wall_messages.db"
+    engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
 else:
     DATABASE_URL = os.environ["DATABASE_URL"]
+    engine = create_engine(DATABASE_URL)
     
     
     
@@ -25,8 +27,6 @@ ram_normal = True
 disk_normal = True
 
 
-
-engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
 SessionLocal = sessionmaker(bind=engine)
 Base = declarative_base()