diff --git a/ChangeLog b/ChangeLog
index d2a6dc56a7..935607bf31 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Dec 25 20:07:13 2007  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* tool/make-snapshot: more portable.
+
 Tue Dec 25 19:01:04 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* encoding.h (rb_enc_mbc_to_codepoint): wrapper for
diff --git a/tool/make-snapshot b/tool/make-snapshot
index f0f377c9ca..957c3e8b46 100755
--- a/tool/make-snapshot
+++ b/tool/make-snapshot
@@ -12,7 +12,7 @@ dest=`cd "$1"; pwd`
 tmp=${TMP_DIR-/tmp}/ #ruby-snapshot-$$
 mkdir -p "$tmp"
 cd "$tmp"
-revision=`svn export $SVNURL ruby | sed -n '$s/.*\([0-9][0-9]*\).*/\1/p'`
+revision=`svn export $SVNURL ruby | sed -n '$s/[^0-9]//gp'`
 [ $revision ] || revision=`svn info $SVNURL | sed -n 's/Revision: //p'`
 echo "#define RUBY_REVISION $revision" > ruby/revision.h
 v=ruby-r$revision