diff --git a/spec/app/package-config-panel-spec.coffee b/spec/app/package-config-panel-spec.coffee
index fb3d648a7..ce7d1f91a 100644
--- a/spec/app/package-config-panel-spec.coffee
+++ b/spec/app/package-config-panel-spec.coffee
@@ -30,8 +30,13 @@ describe "PackageConfigPanel", ->
     observeSubscription = config.observe('core.disabledPackages', configObserver)
     config.set('core.disabledPackages', ['p1', 'p3'])
     configObserver.reset()
+    jasmine.unspy(window, "setTimeout")
     panel = new PackageConfigPanel
 
+    installedCallback = jasmine.createSpy("installed packages callback")
+    panel.installed.on("installed-packages-loaded", installedCallback)
+    waitsFor -> installedCallback.callCount > 0
+
   describe 'Installed tab', ->
     it "lists all installed packages with a link to enable or disable the package", ->
       p1View = panel.installed.find("[name='p1']").view()