diff --git a/jero-boot-incoming-payment/src/main/java/com/jero/mail/controller/PayMailBillController.java b/jero-boot-incoming-payment/src/main/java/com/jero/mail/controller/PayMailBillController.java
index 65c79249..94f71011 100644
--- a/jero-boot-incoming-payment/src/main/java/com/jero/mail/controller/PayMailBillController.java
+++ b/jero-boot-incoming-payment/src/main/java/com/jero/mail/controller/PayMailBillController.java
@@ -240,7 +240,7 @@ public class PayMailBillController extends JeroController<PayMailBill, IPayMailB
 					//判断变更那个项目的邮寄状态
 					if (GlobalConstants.ONE.equals(one.getProjectType())) {
 						PayCommonProject payCommonProjectOld = payCommonProjectService.getById(one.getProjectId());
-						if(!Objects.isNull(payCommonProjectOld)){
+						if(Objects.isNull(payCommonProjectOld)){
 							throw new JeroBootException("项目不存在！");
 						}
 						PayContactsManagementTemporary payCommonProjectTemporary = payContactsManagementTemporaryService.getById(payCommonProjectOld.getContactsTemporaryId());