diff --git a/docs/reference/query-dsl/mlt-query.asciidoc b/docs/reference/query-dsl/mlt-query.asciidoc
index 659d0542adb41..1a440e418db64 100644
--- a/docs/reference/query-dsl/mlt-query.asciidoc
+++ b/docs/reference/query-dsl/mlt-query.asciidoc
@@ -198,7 +198,8 @@ input document. Defaults to `5`.
 `max_doc_freq`::
 The maximum document frequency above which the terms will be ignored from the
 input document. This could be useful in order to ignore highly frequent words
-such as stop words. Defaults to unbounded (`0`).
+such as stop words. Defaults to unbounded (`Integer.MAX_VALUE`, which is `2^31-1`
+or 2147483647).
 
 `min_word_length`::
 The minimum word length below which the terms will be ignored. The old name