diff --git a/src/main/java/org/codelibs/fess/helper/SuggestHelper.java b/src/main/java/org/codelibs/fess/helper/SuggestHelper.java
index c996c68cb..a81030ce1 100644
--- a/src/main/java/org/codelibs/fess/helper/SuggestHelper.java
+++ b/src/main/java/org/codelibs/fess/helper/SuggestHelper.java
@@ -23,11 +23,11 @@ import java.time.ZoneId;
 import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Set;
 import java.util.Map;
-import java.util.HashMap;
+import java.util.Set;
 import java.util.function.Consumer;
 
 import javax.annotation.PostConstruct;