diff --git a/Library/Homebrew/test/support/fixtures/bottles/testball_bottle-0.1.linux_x86_64.bottle.tar.gz b/Library/Homebrew/test/support/fixtures/bottles/testball_bottle-0.1.x86_64_linux.bottle.tar.gz
similarity index 100%
rename from Library/Homebrew/test/support/fixtures/bottles/testball_bottle-0.1.linux_x86_64.bottle.tar.gz
rename to Library/Homebrew/test/support/fixtures/bottles/testball_bottle-0.1.x86_64_linux.bottle.tar.gz
diff --git a/Library/Homebrew/utils/bottles.rb b/Library/Homebrew/utils/bottles.rb
index 66b5fb640d..3a61cf215e 100644
--- a/Library/Homebrew/utils/bottles.rb
+++ b/Library/Homebrew/utils/bottles.rb
@@ -5,7 +5,7 @@ module Utils
   class Bottles
     class << self
       def tag
-        @bottle_tag ||= "#{ENV["HOMEBREW_SYSTEM"]}_#{ENV["HOMEBREW_PROCESSOR"]}".downcase.to_sym
+        @bottle_tag ||= "#{ENV["HOMEBREW_PROCESSOR"]}_#{ENV["HOMEBREW_SYSTEM"]}".downcase.to_sym
       end
 
       def built_as?(f)