diff --git a/config.mma.def.h b/config.mma.def.h
index d988869..14d9d1e 100644
--- a/config.mma.def.h
+++ b/config.mma.def.h
@@ -50,11 +50,12 @@ static const MonitorRule monrules[] = {
 
 /* keyboard */
 static const struct xkb_rule_names xkb_rules = {
-	/* can specify fields: rules, model, layout, variant, options */
+	/* can specify fields: rules, model, layout, variant, options
+     * Base rules in /usr/share/X11/xkb/rules/base.lst */
 	/* example:
 	.options = "ctrl:nocaps",
 	*/
-	.options = NULL,
+	.options = "caps:none",
 };
 
 static const int repeat_rate = 25;