Prosnorkulus

Sorry if this isnt the place for this but I cannot figure out how to make escape close mame. I do not know if this is a problem with launchbox or mame but whenever i press escape, instead of closing, mame brings up the current games palette. Ive tried mapping escape to ui cancel and ive tried putting in a command in the autohotkey script. I would try unmapping escape from pulling up the palette but i dont know where to find that, i checked the mame settings and the config file and nothing was mapped to escape. Does anyone know a fix for this?