[DOC] Fix typo in `Hash#compare_by_identity` docs

1 files changed, 1 insertions, 1 deletions

diff --git a/hash.c b/hash.c
index 603cab76db..97a303c4d5 100644
--- a/hash.c
+++ b/hash.c
@@ -4649,7 +4649,7 @@ rb_hash_compact_bang(VALUE hash)
  *  returns +self+:
  *
  *  By default, two keys are considered to be the same key
- *  if and only if they are _equal_ objects (per method #==):
+ *  if and only if they are _equal_ objects (per method #eql?):
  *
  *    h = {}
  *    h['x'] = 0