diff --git a/common/src/main/java/com/alibaba/otter/canal/common/utils/JsonUtils.java b/common/src/main/java/com/alibaba/otter/canal/common/utils/JsonUtils.java
index eea67c73..5b42683d 100644
--- a/common/src/main/java/com/alibaba/otter/canal/common/utils/JsonUtils.java
+++ b/common/src/main/java/com/alibaba/otter/canal/common/utils/JsonUtils.java
@@ -90,7 +90,7 @@ public class JsonUtils {
 
         @Override
         public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features)
-                                                                                                     throws IOException {
+                                                                                                                   throws IOException {
             if (object == null) {
                 serializer.writeNull();
                 return;
diff --git a/deployer/src/main/java/com/alibaba/otter/canal/deployer/monitor/SpringInstanceConfigMonitor.java b/deployer/src/main/java/com/alibaba/otter/canal/deployer/monitor/SpringInstanceConfigMonitor.java
index 0564b842..864753ab 100644
--- a/deployer/src/main/java/com/alibaba/otter/canal/deployer/monitor/SpringInstanceConfigMonitor.java
+++ b/deployer/src/main/java/com/alibaba/otter/canal/deployer/monitor/SpringInstanceConfigMonitor.java
@@ -49,7 +49,7 @@ public class SpringInstanceConfigMonitor extends AbstractCanalLifeCycle implemen
     private ScheduledExecutorService         executor             = Executors.newScheduledThreadPool(1,
                                                                       new NamedThreadFactory("canal-instance-scan"));
 
-    private volatile boolean isFirst = true;
+    private volatile boolean                 isFirst              = true;
 
     public void start() {
         super.start();
@@ -60,7 +60,9 @@ public class SpringInstanceConfigMonitor extends AbstractCanalLifeCycle implemen
             public void run() {
                 try {
                     scan();
-                    if (isFirst) isFirst = false;
+                    if (isFirst) {
+                        isFirst = false;
+                    }
                 } catch (Throwable e) {
                     logger.error("scan failed", e);
                 }