diff --git a/Gruntfile.coffee b/Gruntfile.coffee
index 1dcbca7..e781ff6 100644
--- a/Gruntfile.coffee
+++ b/Gruntfile.coffee
@@ -30,9 +30,6 @@ module.exports = ->
         options:
           debug: true
           ide: 'http://localhost:8000/index.html'
-          signalserver: 'http://flowhub-rtc.herokuapp.com' # FIXME: use
-#          signalserver: 'http://localhost:8888'
-#          signalserver: 'http://api.flowhub.io'
         files:
           "browser/<%=pkg.name%>.js": ['component.json']