diff --git a/chain_service/repositories/chain.py b/chain_service/repositories/chain.py
index 6218337..98c15f0 100644
--- a/chain_service/repositories/chain.py
+++ b/chain_service/repositories/chain.py
@@ -19,8 +19,8 @@ class ChainRepository:
         return chain
 
     async def get_list(self) -> List[Chain]:
-        sort_order = [("last_modified", pymongo.DESCENDING)]
-        chains = [chain async for chain in self.collection.find().sort(sort_order)]
+        sort_order = ("lastModified", pymongo.DESCENDING)
+        chains = [chain async for chain in self.collection.find().sort(*sort_order)]
         return TypeAdapter(List[Chain]).validate_python(chains)
 
     async def get_by_id(self, chain_id: str) -> Chain | None: