diff --git a/ChangeLog b/ChangeLog
index 50ab9e928b..7a0c17d587 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Feb  4 15:10:10 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/io/console/console.c (rawmode_opt): initialize options for the
+	  case all options are not given.
+
 Mon Feb  4 12:44:13 2013  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_dump.c (control_frame_dump): capitalize prefix of `ep'
diff --git a/ext/io/console/console.c b/ext/io/console/console.c
index 61b31258e6..f614c68a26 100644
--- a/ext/io/console/console.c
+++ b/ext/io/console/console.c
@@ -105,6 +105,8 @@ rawmode_opt(int argc, VALUE *argv, rawmode_arg_t *opts)
     if (!NIL_P(vopts)) {
 	VALUE vmin = rb_hash_aref(vopts, ID2SYM(rb_intern("min")));
 	VALUE vtime = rb_hash_aref(vopts, ID2SYM(rb_intern("time")));
+	opts->vmin = 0;
+	opts->vtime = 0;
 	if (!NIL_P(vmin)) {
 	    opts->vmin = NUM2INT(vmin);
 	    optp = opts;