diff --git a/conf/infinity_mapping.json b/conf/infinity_mapping.json
index e44766447..51888e9de 100644
--- a/conf/infinity_mapping.json
+++ b/conf/infinity_mapping.json
@@ -39,5 +39,6 @@
 	"n_hop_with_weight": {"type": "varchar", "default": ""},
 	"removed_kwd": {"type": "varchar", "default": "", "analyzer": "whitespace-#"},
 	"doc_type_kwd": {"type": "varchar", "default": "", "analyzer": "whitespace-#"},
-	"toc_kwd": {"type": "varchar", "default": "", "analyzer": "whitespace-#"}
+	"toc_kwd": {"type": "varchar", "default": "", "analyzer": "whitespace-#"},
+	"raptor_kwd": {"type": "varchar", "default": "", "analyzer": "whitespace-#"}
 }