diff --git a/src/main/java/jp/sf/fess/robot/FessS2RobotThread.java b/src/main/java/jp/sf/fess/robot/FessS2RobotThread.java
index 7b63e38e5..de8a5c2ef 100644
--- a/src/main/java/jp/sf/fess/robot/FessS2RobotThread.java
+++ b/src/main/java/jp/sf/fess/robot/FessS2RobotThread.java
@@ -206,7 +206,7 @@ public class FessS2RobotThread extends S2RobotThread {
                     responseData.setParentUrl(urlQueue.getParentUrl());
                     responseData.setSessionId(robotContext.getSessionId());
                     responseData
-                            .setStatus(org.codelibs.robot.Constants.NOT_MODIFIED_STATUS);
+                            .setHttpStatusCode(org.codelibs.robot.Constants.NOT_MODIFIED_STATUS);
                     processResponse(urlQueue, responseData);
 
                     storeChildUrlsToQueue(urlQueue,