diff --git a/src/browser/main.coffee b/src/browser/main.coffee
index be3d17380..193ec85d8 100644
--- a/src/browser/main.coffee
+++ b/src/browser/main.coffee
@@ -21,7 +21,8 @@ start = ->
     return
   else if args.test and args.mainProcess
     console.log = previousConsoleLog
-    require(path.join(args.resourcePath, 'spec/browser/mocha-test-runner'))(args.pathsToOpen)
+    testRunner = require(path.join(args.resourcePath, 'spec/browser/mocha-test-runner'))
+    app.on 'ready', -> testRunner(args.pathsToOpen)
     return
 
   # NB: This prevents Win10 from showing dupe items in the taskbar