diff --git a/ChangeLog b/ChangeLog
index 6cdc8ed3ee..a1d1aaf76f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jul  3 07:06:02 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* Makefile.in (SET_LC_MESSAGES): LC_MESSAGES must be C.
+
 Thu Jul  3 07:02:55 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval.c (Init_eval), gc.c (Init_GC), proc.c (Init_Proc): freeze
diff --git a/Makefile.in b/Makefile.in
index c2ce8709b3..ad4f27abd9 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -86,6 +86,7 @@ PREP          = @PREP@
 ARCHFILE      = @ARCHFILE@
 SETUP         =
 EXTSTATIC     = @EXTSTATIC@
+SET_LC_MESSAGES = env LC_MESSAGES=C
 
 CP            = cp
 MV            = mv