diff --git a/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java b/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java
index cb7345bd3..5439cd80e 100644
--- a/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java
+++ b/src/main/java/org/codelibs/fess/mylasta/direction/FessConfig.java
@@ -606,7 +606,7 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
     /** The key of the configuration. e.g. fess */
     String INDEX_DOCUMENT_SUGGEST_INDEX = "index.document.suggest.index";
 
-    /** The key of the configuration. e.g. .crawler */
+    /** The key of the configuration. e.g. fess_crawler */
     String INDEX_DOCUMENT_CRAWLER_INDEX = "index.document.crawler.index";
 
     /** The key of the configuration. e.g. 10 */
@@ -3482,7 +3482,7 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
 
     /**
      * Get the value for the key 'index.document.crawler.index'. <br>
-     * The value is, e.g. .crawler <br>
+     * The value is, e.g. fess_crawler <br>
      * @return The value of found property. (NotNull: if not found, exception but basically no way)
      */
     String getIndexDocumentCrawlerIndex();
@@ -10230,7 +10230,7 @@ public interface FessConfig extends FessEnv, org.codelibs.fess.mylasta.direction
             defaultMap.put(FessConfig.INDEX_DOCUMENT_SEARCH_INDEX, "fess.search");
             defaultMap.put(FessConfig.INDEX_DOCUMENT_UPDATE_INDEX, "fess.update");
             defaultMap.put(FessConfig.INDEX_DOCUMENT_SUGGEST_INDEX, "fess");
-            defaultMap.put(FessConfig.INDEX_DOCUMENT_CRAWLER_INDEX, ".crawler");
+            defaultMap.put(FessConfig.INDEX_DOCUMENT_CRAWLER_INDEX, "fess_crawler");
             defaultMap.put(FessConfig.INDEX_DOCUMENT_CRAWLER_QUEUE_number_of_shards, "10");
             defaultMap.put(FessConfig.INDEX_DOCUMENT_CRAWLER_DATA_number_of_shards, "10");
             defaultMap.put(FessConfig.INDEX_DOCUMENT_CRAWLER_FILTER_number_of_shards, "10");
diff --git a/src/main/resources/fess_config.properties b/src/main/resources/fess_config.properties
index 3a053a856..b1bf3d5c1 100644
--- a/src/main/resources/fess_config.properties
+++ b/src/main/resources/fess_config.properties
@@ -315,7 +315,7 @@ response.highlight.content_title.enabled=true
 index.document.search.index=fess.search
 index.document.update.index=fess.update
 index.document.suggest.index=fess
-index.document.crawler.index=.crawler
+index.document.crawler.index=fess_crawler
 index.document.crawler.queue.number_of_shards=10
 index.document.crawler.data.number_of_shards=10
 index.document.crawler.filter.number_of_shards=10