diff --git a/docs/reference/search/rank-eval.asciidoc b/docs/reference/search/rank-eval.asciidoc
index b524b8ae33341..19f01f3b77eb7 100644
--- a/docs/reference/search/rank-eval.asciidoc
+++ b/docs/reference/search/rank-eval.asciidoc
@@ -115,7 +115,7 @@ GET /my_index/_rank_eval
   ], 
   "requests": [
       {
-         "id": "amsterdam_query"
+         "id": "amsterdam_query",
          "ratings": [ ... ],
          "template_id": "match_one_field_query", <3>
          "params": { <4>