diff --git a/docs/reference/search/search.asciidoc b/docs/reference/search/search.asciidoc
index 1b51db3725a..644a2aba5e2 100644
--- a/docs/reference/search/search.asciidoc
+++ b/docs/reference/search/search.asciidoc
@@ -288,8 +288,8 @@ the scores are not used for sorting. Defaults to `false`.
 (Optional, integer or boolean)
 Number of hits matching the query to count accurately. Defaults to `10000`.
 +
-If `true`, the exact number of hits is returned. If `false`, the response does not
-include the total number of hits matching the query.
+If `true`, the exact number of hits is returned at the cost of some performance.
+If `false`, the response does not include the total number of hits matching the query.
 
 `typed_keys`::
 (Optional, boolean) If `true`, aggregation and suggester names are be prefixed