diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 03ab567a3..50d7bb04d 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -78,6 +78,7 @@ module ApplicationHelper
 
   def cloud_cover_url(url)
     return nil unless url.present?
+    return asset_path("triple-unicorn") if Rails.env.test?
     width = 1000
     height = 420
     quality = "auto"