diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 3d8648c86b6..e683dd718a6 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,7 @@
+2010-07-12  Andreas Schwab  <schwab@linux-m68k.org>
+
+	* language/tv-util.el (tai-viet-re): Remove format.
+
 2010-07-12  Kenichi Handa  <handa@m17n.org>
 
 	* language/hebrew.el: Remove no-byte-compile declaration.  Change
diff --git a/lisp/language/tv-util.el b/lisp/language/tv-util.el
index 842366dacbc..67ed6327971 100644
--- a/lisp/language/tv-util.el
+++ b/lisp/language/tv-util.el
@@ -24,8 +24,7 @@
 ;;; Code
 
 ;; Regexp matching with a sequence of Tai Viet characters.
-(defconst tai-viet-re
-  (format "[\xaa80-\xaac2\xaadb-\xaadf-]+"))
+(defconst tai-viet-re "[\xaa80-\xaac2\xaadb-\xaadf]+")
 
 ;; Char-table of information about glyph type of Tai Viet characters.
 (defconst tai-viet-glyph-info