diff --git a/ChangeLog b/ChangeLog
index 4e0a58a886..ba6f702c69 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Jul 31 15:50:03 2010  Tanaka Akira  <akr@fsij.org>
+
+	* ext/pathname/pathname.c (Init_pathname): The alias,
+	  Pathname#to_path, is translated from pathname.rb.
+
 Sat Jul 31 09:12:36 2010  Tanaka Akira  <akr@fsij.org>
 
 	* ext/pathname/pathname.c (path_to_s): Pathname#to_s translated
diff --git a/ext/pathname/lib/pathname.rb b/ext/pathname/lib/pathname.rb
index 550939afd9..57e410f345 100644
--- a/ext/pathname/lib/pathname.rb
+++ b/ext/pathname/lib/pathname.rb
@@ -31,9 +31,6 @@ class Pathname
 
   # :startdoc:
 
-  # to_path is implemented so Pathname objects are usable with File.open, etc.
-  alias_method TO_PATH, :to_s
-
   def inspect # :nodoc:
     "#<#{self.class}:#{@path}>"
   end
diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
index 20c7745863..02f964058e 100644
--- a/ext/pathname/pathname.c
+++ b/ext/pathname/pathname.c
@@ -127,7 +127,13 @@ path_hash(VALUE self)
 }
 
 /*
+ *  call-seq:
+ *    pathname.to_s             => string
+ *    pathname.to_path          => string
+ *
  *  Return the path as a String.
+ *
+ *  to_path is implemented so Pathname objects are usable with File.open, etc.
  */
 static VALUE
 path_to_s(VALUE self)
@@ -329,4 +335,5 @@ Init_pathname()
     rb_define_method(rb_cPathname, "<=>", path_cmp, 1);
     rb_define_method(rb_cPathname, "hash", path_hash, 0);
     rb_define_method(rb_cPathname, "to_s", path_to_s, 0);
+    rb_define_method(rb_cPathname, "to_path", path_to_s, 0);
 }