diff --git a/spec/components/js_locale_helper_spec.rb b/spec/components/js_locale_helper_spec.rb
index 269ee01eb0e..a182d2102ee 100644
--- a/spec/components/js_locale_helper_spec.rb
+++ b/spec/components/js_locale_helper_spec.rb
@@ -88,6 +88,7 @@ describe JsLocaleHelper do
     it "generates valid date helpers for #{locale[:value]} locale" do
       js = JsLocaleHelper.output_locale(locale[:value])
       ctx = V8::Context.new
+      ctx.eval('var window = this;')
       ctx.load(Rails.root + 'app/assets/javascripts/locales/i18n.js')
       ctx.eval(js)
     end