Startup applications in LXDE: caps lock as control

I just installed Linux Mint on my Asus T101MT. As with all my computers, I prefer to have the caps lock key as a control key. Of these methods, only the xkb command works. To have the key remapped every session, I followed these instructions and created the file ~/.config/autostart/nocaps.desktop:

<pre class="example">[Desktop Entry]

Encoding=UTF-8 Name=nocaps Comment=Remap caps lock as control. Exec=setxkbmap -option ctrl:nocaps Terminal=true