diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/sender/DataSenderWithCopies.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/sender/DataSenderWithCopies.java
index 0392425c8..045c1c55d 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/sender/DataSenderWithCopies.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/sender/DataSenderWithCopies.java
@@ -27,7 +27,7 @@ public class DataSenderWithCopies implements IDataSender{
 	 */
 	public boolean append(IDataSender dataSender){
 		senders.add(dataSender);
-		return maxCopyNum == senders.size();
+		return senders.size() < maxCopyNum;
 	}
 
 	/**