diff --git a/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/NacosDiscoveryProperties.java b/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/NacosDiscoveryProperties.java
index dca667b0a..59f6c4e8a 100644
--- a/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/NacosDiscoveryProperties.java
+++ b/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/NacosDiscoveryProperties.java
@@ -142,7 +142,7 @@ public class NacosDiscoveryProperties {
 	 */
 	private String secretKey;
 
-    /**
+	/**
 	 * Heart beat interval. Time unit: second.
 	 */
 	private Integer heartBeatInterval;
@@ -349,21 +349,21 @@ public class NacosDiscoveryProperties {
 		this.heartBeatInterval = heartBeatInterval;
 	}
 
-    public Integer getHeartBeatTimeout() {
-        return heartBeatTimeout;
-    }
+	public Integer getHeartBeatTimeout() {
+		return heartBeatTimeout;
+	}
 
-    public void setHeartBeatTimeout(Integer heartBeatTimeout) {
-        this.heartBeatTimeout = heartBeatTimeout;
-    }
+	public void setHeartBeatTimeout(Integer heartBeatTimeout) {
+		this.heartBeatTimeout = heartBeatTimeout;
+	}
 
-    public Integer getIpDeleteTimeout() {
-        return ipDeleteTimeout;
-    }
+	public Integer getIpDeleteTimeout() {
+		return ipDeleteTimeout;
+	}
 
-    public void setIpDeleteTimeout(Integer ipDeleteTimeout) {
-        this.ipDeleteTimeout = ipDeleteTimeout;
-    }
+	public void setIpDeleteTimeout(Integer ipDeleteTimeout) {
+		this.ipDeleteTimeout = ipDeleteTimeout;
+	}
 
 	public String getNamingLoadCacheAtStart() {
 		return namingLoadCacheAtStart;
diff --git a/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/registry/NacosRegistration.java b/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/registry/NacosRegistration.java
index 0d9ac0e14..2c7b0eb1b 100644
--- a/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/registry/NacosRegistration.java
+++ b/alibaba-nacos-discovery-spring-cloud/src/main/java/com/alibaba/cloud/nacos/registry/NacosRegistration.java
@@ -80,16 +80,16 @@ public class NacosRegistration implements Registration, ServiceInstance {
 
 		if (null != nacosDiscoveryProperties.getHeartBeatInterval()) {
 			metadata.put(PreservedMetadataKeys.HEART_BEAT_INTERVAL,
-                    nacosDiscoveryProperties.getHeartBeatInterval().toString());
+					nacosDiscoveryProperties.getHeartBeatInterval().toString());
 		}
 		if (null != nacosDiscoveryProperties.getHeartBeatTimeout()) {
-		    metadata.put(PreservedMetadataKeys.HEART_BEAT_TIMEOUT,
-                    nacosDiscoveryProperties.getHeartBeatTimeout().toString());
-        }
+			metadata.put(PreservedMetadataKeys.HEART_BEAT_TIMEOUT,
+					nacosDiscoveryProperties.getHeartBeatTimeout().toString());
+		}
 		if (null != nacosDiscoveryProperties.getIpDeleteTimeout()) {
-		    metadata.put(PreservedMetadataKeys.IP_DELETE_TIMEOUT,
-                    nacosDiscoveryProperties.getIpDeleteTimeout().toString());
-        }
+			metadata.put(PreservedMetadataKeys.IP_DELETE_TIMEOUT,
+					nacosDiscoveryProperties.getIpDeleteTimeout().toString());
+		}
 	}
 
 	@Override
diff --git a/alibaba-nacos-discovery-spring-cloud/src/test/java/com/alibaba/cloud/nacos/registry/NacosAutoServiceRegistrationTests.java b/alibaba-nacos-discovery-spring-cloud/src/test/java/com/alibaba/cloud/nacos/registry/NacosAutoServiceRegistrationTests.java
index 5a4772bcf..4e79e0585 100644
--- a/alibaba-nacos-discovery-spring-cloud/src/test/java/com/alibaba/cloud/nacos/registry/NacosAutoServiceRegistrationTests.java
+++ b/alibaba-nacos-discovery-spring-cloud/src/test/java/com/alibaba/cloud/nacos/registry/NacosAutoServiceRegistrationTests.java
@@ -169,18 +169,18 @@ public class NacosAutoServiceRegistrationTests {
 	}
 
 	private void checkoutNacosDiscoveryHeartBeatInterval() {
-		assertEquals("NacosDiscoveryProperties heart beat interval was wrong", Integer.valueOf(3),
-				properties.getHeartBeatInterval());
+		assertEquals("NacosDiscoveryProperties heart beat interval was wrong",
+				Integer.valueOf(3), properties.getHeartBeatInterval());
 	}
 
 	private void checkoutNacosDiscoveryHeartBeatTimeout() {
-		assertEquals("NacosDiscoveryProperties heart beat timeout was wrong", Integer.valueOf(6),
-				properties.getHeartBeatInterval());
+		assertEquals("NacosDiscoveryProperties heart beat timeout was wrong",
+				Integer.valueOf(6), properties.getHeartBeatInterval());
 	}
 
 	private void checkoutNacosDiscoveryIpDeleteTimeout() {
-		assertEquals("NacosDiscoveryProperties ip delete timeout was wrong", Integer.valueOf(9),
-				properties.getHeartBeatInterval());
+		assertEquals("NacosDiscoveryProperties ip delete timeout was wrong",
+				Integer.valueOf(9), properties.getHeartBeatInterval());
 	}
 
 	private void checkoutNacosDiscoveryServiceName() {