diff --git a/ChangeLog b/ChangeLog
index cfc5ccff0c..c5106fced3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Dec 24 23:13:09 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
+
+	* lib/rdoc/diagram.rb (RDoc::Diagram#initialize): use fileuitls
+	  instead of ftools.
+
 Mon Dec 24 23:04:57 2007  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
 
 	* lib/ftools.rb: removed obsoleted lib.  use fileutils instead (by eban).
diff --git a/lib/rdoc/diagram.rb b/lib/rdoc/diagram.rb
index 9d4234bc50..849d686b4f 100644
--- a/lib/rdoc/diagram.rb
+++ b/lib/rdoc/diagram.rb
@@ -37,7 +37,7 @@ module RDoc
       @info = info
       @options = options
       @counter = 0
-      File.makedirs(DOT_PATH)
+      FileUtils.mkdir_p(DOT_PATH)
       @diagram_cache = {}
     end