diff --git a/docs/reference/mapping/types/constant-keyword.asciidoc b/docs/reference/mapping/types/constant-keyword.asciidoc
index 69f40c22f7c98..eeef025868ea2 100644
--- a/docs/reference/mapping/types/constant-keyword.asciidoc
+++ b/docs/reference/mapping/types/constant-keyword.asciidoc
@@ -40,14 +40,14 @@ indexing requests are equivalent:
 --------------------------------
 POST logs-debug/_doc
 {
-  "date": "2019-12-12",
+  "@timestamp": "2019-12-12",
   "message": "Starting up Elasticsearch",
   "level": "debug"
 }
 
 POST logs-debug/_doc
 {
-  "date": "2019-12-12",
+  "@timestamp": "2019-12-12",
   "message": "Starting up Elasticsearch"
 }
 --------------------------------