diff --git a/ChangeLog b/ChangeLog
index b6276547ad..d6492713a4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jul  9 15:57:20 2013  Akinori MUSHA  <knu@iDaemons.org>
+
+	* object.c: Fix rdoc for Kernel#<=>. [Fix GH-352]
+
 Tue Jul  9 15:53:51 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* lib/fileutils.rb (FileUtils#mode_to_s): Define mode_to_s() also
diff --git a/object.c b/object.c
index 23dbbf4d10..082d2f4c6e 100644
--- a/object.c
+++ b/object.c
@@ -1357,7 +1357,7 @@ rb_obj_not_match(VALUE obj1, VALUE obj2)
  *  call-seq:
  *     obj <=> other -> 0 or nil
  *
- *  Returns 0 if obj === other, otherwise nil.
+ *  Returns 0 if obj.equal?(other) or obj == other, otherwise nil.
  *
  *  The <=> is used by various methods to compare objects, for example
  *  Enumerable#sort, Enumerable#max etc.