diff --git a/package.json b/package.json
index c6bf243..b489ae2 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "build-extensions": "npm run build-firefox && npm run build-chrome",
     "build-firefox": "cd firefox/ && jpm xpi && cd -",
     "build-chrome": "crx pack chrome -o chrome/hipchat-emoticons-for-all.crx -p chrome/key.pem",
+    "test-firefox": "cd firefox/ && jpm run -b /usr/bin/firefox && cd -",
     "build-js": "bash build-js.sh",
     "build-data-files": "python firefox/build-package.py && python chrome/build-manifest.py",
     "distribute": "cp -r build/* firefox/data/ && cp -r build/* chrome/data/",