diff --git a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/es/JeroElasticsearchTemplate.java b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/es/JeroElasticsearchTemplate.java
index 1c3563d3..90758d7b 100644
--- a/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/es/JeroElasticsearchTemplate.java
+++ b/jero-boot/jero-boot-base/jero-boot-base-core/src/main/java/com/jero/common/es/JeroElasticsearchTemplate.java
@@ -25,7 +25,7 @@ import java.util.*;
 public class JeroElasticsearchTemplate {
     /** es服务地址 */
     private String baseUrl;
-    private final String FORMAT_JSON = "format=json";
+    private static final String FORMAT_JSON = "format=json";
     /** Elasticsearch 的版本号 */
     private String version = null;