diff --git a/src/main/java/jp/sf/fess/helper/CrawlingConfigHelper.java b/src/main/java/jp/sf/fess/helper/CrawlingConfigHelper.java
index 986f3d561..9abe8660f 100644
--- a/src/main/java/jp/sf/fess/helper/CrawlingConfigHelper.java
+++ b/src/main/java/jp/sf/fess/helper/CrawlingConfigHelper.java
@@ -135,6 +135,7 @@ public class CrawlingConfigHelper implements Serializable {
         final HttpServletResponse response = ResponseUtil.getResponse();
         writeFileName(response, responseData);
         writeContentType(response, responseData);
+        writeNoCache(response, responseData);
         InputStream is = null;
         OutputStream os = null;
         try {
@@ -152,6 +153,13 @@ public class CrawlingConfigHelper implements Serializable {
         }
     }
 
+    protected void writeNoCache(final HttpServletResponse response,
+            final ResponseData responseData) {
+        response.setHeader("Pragma", "no-cache");
+        response.setHeader("Cache-Control", "no-cache");
+        response.setHeader("Expires", "Thu, 01 Dec 1994 16:00:00 GMT");
+    }
+
     protected void writeFileName(final HttpServletResponse response,
             final ResponseData responseData) {
         final UserAgentHelper userAgentHelper = SingletonS2Container