diff --git a/src/scripts/inputManager.js b/src/scripts/inputManager.js
index 82e632a28d..55427ece74 100644
--- a/src/scripts/inputManager.js
+++ b/src/scripts/inputManager.js
@@ -235,7 +235,8 @@ import { appHost } from '../components/apphost';
             },
             'repeatone': () => {
                 playbackManager.setRepeatMode('RepeatOne');
-            }
+            },
+            'unknown': () => {}
         })[command];
 
         const action = keyActions(commandName);