diff --git a/js/spatial-navigation.js b/js/spatial-navigation.js
index 0a1fd2f..259deb6 100644
--- a/js/spatial-navigation.js
+++ b/js/spatial-navigation.js
@@ -2510,6 +2510,7 @@ function map(targets, callback, reverse, stack) {
         }
         observer.blur();
         observer.remove();
+        // TODO: Decouple from E key
         switch (key) {
             case !reverse ? 'e' : 'E':
                 if (targets.length > keys.length) {