diff --git a/xinitrc b/xinitrc
index 316ecb2..0d36f75 100644
--- a/xinitrc
+++ b/xinitrc
@@ -2,7 +2,7 @@ test "`hostname`" == "arch-aspireone" &&
 setxkbmap -model "acer_laptop" -layout "jp" # this line must comes first
 
 setxkbmap -option "ctrl:nocaps"
-xmodmap -e 'keycode 135 = Alt_R Meta_R' # menu key as alt
+setxkbmap -option "ctrl:menu_rctrl"
 xmodmap -e 'keycode 101 = Alt_R Meta_R' # hiragana key as alt
 #xmodmap -e 'remove Lock = Caps_Lock'
 #xmodmap -e 'add Control = Caps_Lock'