diff --git a/hash.c b/hash.c
index 0d5f1554a1..17d71c6cfd 100644
--- a/hash.c
+++ b/hash.c
@@ -3007,13 +3007,13 @@ rb_hash_replace(VALUE hash, VALUE hash2)
 
 /*
  *  call-seq:
- *     length -> integer
  *     size -> integer
  *
  *  Returns the count of entries in +self+:
  *
- *    {foo: 0, bar: 1, baz: 2}.length # => 3
+ *    {foo: 0, bar: 1, baz: 2}.size # => 3
  *
+ *  Related: see {Methods for Querying}[rdoc-ref:Hash@Methods+for+Querying].
  */
 
 VALUE