diff --git a/ChangeLog b/ChangeLog
index d58142fdbd..c375c80a35 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Oct  2 03:25:01 2003  NAKAMURA Usaku <usa@ruby-lang.org>
+
+	* eval.c (rb_thread_raise): prototype; avoid VC++ warning.
+
 Thu Oct  2 01:32:46 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* eval.c (rb_f_block_given_p): real required condition is
diff --git a/eval.c b/eval.c
index 7c9ede5cb6..7726edb9e8 100644
--- a/eval.c
+++ b/eval.c
@@ -8188,7 +8188,7 @@ rb_thread_check(data)
     return (rb_thread_t)RDATA(data)->data;
 }
 
-static VALUE rb_thread_raise _((int, VALUE*, rb_thread_t));
+static VALUE rb_thread_raise _((int, VALUE*, volatile rb_thread_t));
 
 static int   th_raise_argc;
 static VALUE th_raise_argv[2];