diff --git a/ngrinder-core/src/main/java/net/grinder/engine/communication/AgentUpdateGrinderMessage.java b/ngrinder-core/src/main/java/net/grinder/engine/communication/AgentUpdateGrinderMessage.java
index 98df469b5a..838d0abed4 100644
--- a/ngrinder-core/src/main/java/net/grinder/engine/communication/AgentUpdateGrinderMessage.java
+++ b/ngrinder-core/src/main/java/net/grinder/engine/communication/AgentUpdateGrinderMessage.java
@@ -30,7 +30,7 @@ public class AgentUpdateGrinderMessage implements Message {
 	/**
 	 * -1 is ending, -2 is error
 	 */
-	private final int next;
+	private int next;
 	private final long checksum;
 
 	/**