diff --git a/ch01/classesRating_mapping.json b/ch01/classesRating_mapping.json
index 8e2a6ca..e8b29c9 100644
--- a/ch01/classesRating_mapping.json
+++ b/ch01/classesRating_mapping.json
@@ -2,16 +2,16 @@
 	"class" : {
 		"properties" : {
 			"title" : {
-				"type" : "string"
+				"type" : "text"
 			},
 			"professor" : {
-				"type" : "string"
+				"type" : "text"
 			},
 			"major" : {
-				"type" : "string"
+				"type" : "text"
 			},
 			"semester" : {
-				"type" : "string"
+				"type" : "text"
 			},
 			"student_count" : {
 				"type" : "integer"
@@ -31,4 +31,4 @@
 			}
 		}
 	}
-}
\ No newline at end of file
+}