diff --git a/openmessaging/src/main/java/io/openmessaging/rocketmq/domain/RocketMQConstants.java b/openmessaging/src/main/java/io/openmessaging/rocketmq/domain/RocketMQConstants.java
index 838bbf5176a4c6fd41ff43b020bbf296fef8eacf..4c6568ae0f9c5e5029d4d67107d58d00d29f7e15 100644
--- a/openmessaging/src/main/java/io/openmessaging/rocketmq/domain/RocketMQConstants.java
+++ b/openmessaging/src/main/java/io/openmessaging/rocketmq/domain/RocketMQConstants.java
@@ -2,6 +2,6 @@ package io.openmessaging.rocketmq.domain;
 
 public interface RocketMQConstants {
 
-    String STARTDELIVERTIME = "__STARTDELIVERTIME";
+    String START_DELIVER_TIME = "__STARTDELIVERTIME";
 
 }
diff --git a/openmessaging/src/main/java/io/openmessaging/rocketmq/utils/OMSUtil.java b/openmessaging/src/main/java/io/openmessaging/rocketmq/utils/OMSUtil.java
index 36f0656caadb99ae19f187f69f5d9dea9c1c79fb..23021413c8079c39a4d2ab419a60274244e1e45d 100644
--- a/openmessaging/src/main/java/io/openmessaging/rocketmq/utils/OMSUtil.java
+++ b/openmessaging/src/main/java/io/openmessaging/rocketmq/utils/OMSUtil.java
@@ -57,7 +57,7 @@ public class OMSUtil {
         if (sysHeaders.containsKey(BuiltinKeys.START_TIME)) {
             long deliverTime = sysHeaders.getLong(BuiltinKeys.START_TIME, 0);
             if (deliverTime > 0) {
-                rmqMessage.putUserProperty(RocketMQConstants.STARTDELIVERTIME, String.valueOf(deliverTime));
+                rmqMessage.putUserProperty(RocketMQConstants.START_DELIVER_TIME, String.valueOf(deliverTime));
             }
         }