diff --git a/src/test/java/com/alipay/sofa/common/log/LoggerSpaceConcurrencyTest.java b/src/test/java/com/alipay/sofa/common/log/LoggerSpaceConcurrencyTest.java
index 93f2809..7fe3c62 100644
--- a/src/test/java/com/alipay/sofa/common/log/LoggerSpaceConcurrencyTest.java
+++ b/src/test/java/com/alipay/sofa/common/log/LoggerSpaceConcurrencyTest.java
@@ -19,7 +19,7 @@
 import org.junit.Assert;
 import org.junit.Test;
 import org.slf4j.Logger;
-````
+
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.CountDownLatch;