diff --git a/src/main/resources/fess_indices/fess.json b/src/main/resources/fess_indices/fess.json
index 264bababd..fba8d1f45 100644
--- a/src/main/resources/fess_indices/fess.json
+++ b/src/main/resources/fess_indices/fess.json
@@ -976,6 +976,7 @@
             "cjk_bigram",
             "stopword_en_filter",
             "lowercase",
+            "english_keywords",
             "stemmer_en_filter"
           ]
         },