diff --git a/src/scripts/utils/keyboard.js b/src/scripts/utils/keyboard.js
index <HASH>..<HASH> 100644
--- a/src/scripts/utils/keyboard.js
+++ b/src/scripts/utils/keyboard.js
@@ -194,6 +194,8 @@ export default class Keyboard {
           this.selectedIndex = nextIndex(this.selectedIndex, lastIndex);
           event.preventDefault();
           break;
+        default:
+          return;
       }
 
       // move tabindex to currently selected
Only update on registered keys

HFP-<I>