diff --git a/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java b/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java
index cb867ab..3abd21d 100644
--- a/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java
+++ b/pay-java-union/src/main/java/com/egzosn/pay/union/api/UnionPayService.java
@@ -59,7 +59,7 @@ public class UnionPayService extends BasePayService<UnionPayConfigStorage> {
     /**
      * 证书解释器
      */
-    private CertDescriptor certDescriptor = null;
+    private CertDescriptor certDescriptor;
     /**
      * 构造函数
      *