diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xxl/job/executor/sample/frameless/XxlJobFramelessApplication.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xxl/job/executor/sample/frameless/XxlJobFramelessApplication.java
index bcf32b14..eee00845 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xxl/job/executor/sample/frameless/XxlJobFramelessApplication.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xxl/job/executor/sample/frameless/XxlJobFramelessApplication.java
@@ -10,7 +10,7 @@ import java.util.concurrent.TimeUnit;
  * @author xuxueli 2018-10-31 19:05:43
  */
 public class XxlJobFramelessApplication {
-    private static Logger logger = LoggerFactory.getLogger(XxlJobFramelessApplication.class);
+    private static final Logger logger = LoggerFactory.getLogger(XxlJobFramelessApplication.class);
 
     public static void main(String[] args) {