diff --git a/ChangeLog b/ChangeLog
index 8b0174a713..99f2171c2f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Sep  8 01:10:41 2008  Tanaka Akira  <akr@fsij.org>
+
+	* tool/transcode-tblgen.rb (transcode_tblgen): log message refined.
+
 Mon Sep  8 00:58:04 2008  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* rational.c: removed unused code.
diff --git a/tool/transcode-tblgen.rb b/tool/transcode-tblgen.rb
index b90b18cc1e..2eb4a01565 100644
--- a/tool/transcode-tblgen.rb
+++ b/tool/transcode-tblgen.rb
@@ -603,7 +603,13 @@ TRANSCODERS = []
 TRANSCODE_GENERATED_TRANSCODER_CODE = ''
 
 def transcode_tblgen(from, to, map)
-  STDERR.puts "converter from #{from} to #{to}" if VERBOSE_MODE
+  if VERBOSE_MODE
+    if from.empty? || to.empty?
+      STDERR.puts "converter for #{from.empty? ? to : from}"
+    else
+      STDERR.puts "converter from #{from} to #{to}"
+    end
+  end
   id_from = from.tr('^0-9A-Za-z', '_')
   id_to = to.tr('^0-9A-Za-z', '_')
   if from == "UTF-8"