diff --git a/src/main/java/org/codelibs/fess/query/QueryFieldConfig.java b/src/main/java/org/codelibs/fess/query/QueryFieldConfig.java
index b5dc1111d..5d813c7f9 100644
--- a/src/main/java/org/codelibs/fess/query/QueryFieldConfig.java
+++ b/src/main/java/org/codelibs/fess/query/QueryFieldConfig.java
@@ -202,6 +202,7 @@ public class QueryFieldConfig {
         }
         if (apiResponseFieldSet == null) {
             setApiResponseFields(fessConfig.getQueryAdditionalApiResponseFields(//
+                    SCORE_SORT_VALUE, //
                     fessConfig.getResponseFieldContentDescription(), //
                     fessConfig.getResponseFieldContentTitle(), //
                     fessConfig.getResponseFieldSitePath(), //