diff --git a/package.json b/package.json
index 6663579..e62dd5c 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "scripts": {
     "start": "webpack -w --debug",
     "lint": "eslint src",
-    "test": "true"
+    "test": "karma start"
   },
   "repository": {
     "type": "git",
diff --git a/src/background/index.js b/src/background/index.js
index d27c557..604ea92 100644
--- a/src/background/index.js
+++ b/src/background/index.js
@@ -2,7 +2,7 @@ import * as actions from '../shared/actions';
 import * as tabs from './tabs';
 import KeyQueue from './key-queue';
 
-const queue = new KeyQueue(KeyQueue.DEFAULT_KEYMAP);
+const queue = new KeyQueue();
 
 const keyDownHandle = (request) => {
   return queue.push({