diff --git a/corvid/router.py b/corvid/router.py
index 2c8df8c..8fc1e53 100644
--- a/corvid/router.py
+++ b/corvid/router.py
@@ -125,7 +125,7 @@ async def _get_env_or_404(db: AsyncSession, env_id: int) -> Environment:
 
 
 async def _default_env_id(db: AsyncSession) -> int | None:
-    e = (await db.execute(select(Environment).order_by(Environment.id))).scalar_one_or_none()
+    e = (await db.execute(select(Environment).order_by(Environment.id))).scalars().first()
     return e.id if e else None