diff --git a/src/main/java/org/codelibs/fess/es/client/FessEsClient.java b/src/main/java/org/codelibs/fess/es/client/FessEsClient.java
index 494233ea9..705858fef 100644
--- a/src/main/java/org/codelibs/fess/es/client/FessEsClient.java
+++ b/src/main/java/org/codelibs/fess/es/client/FessEsClient.java
@@ -145,7 +145,6 @@ import org.elasticsearch.index.query.QueryBuilders;
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.SearchHits;
 import org.elasticsearch.search.aggregations.AggregationBuilders;
-import org.elasticsearch.search.aggregations.BucketOrder;
 import org.elasticsearch.search.aggregations.bucket.filter.FilterAggregationBuilder;
 import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
 import org.elasticsearch.search.collapse.CollapseBuilder;
diff --git a/src/main/java/org/codelibs/fess/util/FacetResponse.java b/src/main/java/org/codelibs/fess/util/FacetResponse.java
index 8543596e2..ced7ba660 100644
--- a/src/main/java/org/codelibs/fess/util/FacetResponse.java
+++ b/src/main/java/org/codelibs/fess/util/FacetResponse.java
@@ -17,7 +17,6 @@ package org.codelibs.fess.util;
 
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;