diff --git a/sharding-core/src/main/java/io/shardingsphere/api/config/rule/KeyGeneratorConfiguration.java b/sharding-core/src/main/java/io/shardingsphere/api/config/rule/KeyGeneratorConfiguration.java
index 2e09c052d0204..66e8f4098c79f 100644
--- a/sharding-core/src/main/java/io/shardingsphere/api/config/rule/KeyGeneratorConfiguration.java
+++ b/sharding-core/src/main/java/io/shardingsphere/api/config/rule/KeyGeneratorConfiguration.java
@@ -20,6 +20,7 @@
 import lombok.Builder;
 import lombok.Data;
 
+
 /**
  * @author:zhaodong.xzd
  * @github https://github.com/Yaccc