diff --git a/beacon_node/client/src/client_config.rs b/beacon_node/client/src/client_config.rs
index 4309b8a64a..8d7176c2cf 100644
--- a/beacon_node/client/src/client_config.rs
+++ b/beacon_node/client/src/client_config.rs
@@ -53,7 +53,7 @@ impl Default for ClientConfig {
             // default to memory db for now
             db_type: DBType::Memory,
             // default db name for disk-based dbs
-            db_name: data_dir.join("chain.db"),
+            db_name: data_dir.join("chain_db"),
             rpc_conf: rpc::RPCConfig::default(),
         }
     }