diff --git a/Library/Homebrew/software_spec.rb b/Library/Homebrew/software_spec.rb
index f0e0c34932..a0e3ab7a9d 100644
--- a/Library/Homebrew/software_spec.rb
+++ b/Library/Homebrew/software_spec.rb
@@ -252,7 +252,8 @@ class BottleSpecification
   DEFAULT_PREFIX = "/usr/local".freeze
   DEFAULT_CELLAR = "/usr/local/Cellar".freeze
   if ENV["HOMEBREW_BINTRAY_TESTING"]
-    DEFAULT_ROOT_URL = "https://bintray.com/artifact/download/homebrew/bottles".freeze
+    DEFAULT_DOMAIN = "https://homebrew.bintray.com".freeze
+    DEFAULT_ROOT_URL = "#{DEFAULT_DOMAIN}/bottles".freeze
   else
     DEFAULT_ROOT_URL = "https://downloads.sf.net/project/machomebrew/Bottles".freeze
   end