diff --git a/object.c b/object.c
index 9cbc251d27..64cf88ae9f 100644
--- a/object.c
+++ b/object.c
@@ -2263,7 +2263,7 @@ id_for_attr(VALUE obj, VALUE name)
  *  value of each instance variable. Equivalent to calling
  *  ``<code>attr</code><i>:name</i>'' on each name in turn.
  *  String arguments are converted to symbols.
- *  Returns an array of defined methods names as symbols.
+ *  Returns an array of defined method names as symbols.
  */
 
 static VALUE
@@ -2289,7 +2289,7 @@ rb_mod_attr_reader(int argc, VALUE *argv, VALUE klass)
  *  The first form is equivalent to #attr_reader.
  *  The second form is equivalent to <code>attr_accessor(name)</code> but deprecated.
  *  The last form is equivalent to <code>attr_reader(name)</code> but deprecated.
- *  Returns an array of defined methods names as symbols.
+ *  Returns an array of defined method names as symbols.
  *--
  * \private
  * \todo can be static?
@@ -2319,7 +2319,7 @@ rb_mod_attr(int argc, VALUE *argv, VALUE klass)
  *  Creates an accessor method to allow assignment to the attribute
  *  <i>symbol</i><code>.id2name</code>.
  *  String arguments are converted to symbols.
- *  Returns an array of defined methods names as symbols.
+ *  Returns an array of defined method names as symbols.
  */
 
 static VALUE
@@ -2346,7 +2346,7 @@ rb_mod_attr_writer(int argc, VALUE *argv, VALUE klass)
  *  (<code>@name</code>) and a corresponding access method to read it.
  *  Also creates a method called <code>name=</code> to set the attribute.
  *  String arguments are converted to symbols.
- *  Returns an array of defined methods names as symbols.
+ *  Returns an array of defined method names as symbols.
  *
  *     module Mod
  *       attr_accessor(:one, :two) #=> [:one, :one=, :two, :two=]