diff --git a/rocketmq-broker/src/broker/broker_pre_online_service.rs b/rocketmq-broker/src/broker/broker_pre_online_service.rs
index 3fddd892..2137a988 100644
--- a/rocketmq-broker/src/broker/broker_pre_online_service.rs
+++ b/rocketmq-broker/src/broker/broker_pre_online_service.rs
@@ -19,11 +19,10 @@ use tracing::warn;
 pub struct BrokerPreOnlineService;
 
 impl BrokerPreOnlineService {
-
     pub fn start(&mut self) {
         warn!("BrokerPreOnlineService started not implemented");
     }
-    
+
     pub fn shutdown(&mut self) {
         warn!("BrokerPreOnlineService shutdown not implemented");
     }
diff --git a/rocketmq-broker/src/latency/broker_fast_failure.rs b/rocketmq-broker/src/latency/broker_fast_failure.rs
index a5b36fd0..8aac6b29 100644
--- a/rocketmq-broker/src/latency/broker_fast_failure.rs
+++ b/rocketmq-broker/src/latency/broker_fast_failure.rs
@@ -19,7 +19,6 @@ use tracing::warn;
 pub struct BrokerFastFailure;
 
 impl BrokerFastFailure {
-    
     pub fn start(&mut self) {
         warn!("BrokerFastFailure started not implemented");
     }