diff --git a/Library/Homebrew/hardware.rb b/Library/Homebrew/hardware.rb
index b10b2770c7..3d76a74db5 100644
--- a/Library/Homebrew/hardware.rb
+++ b/Library/Homebrew/hardware.rb
@@ -27,6 +27,8 @@ class Hardware
       :penryn
     when 0x6b5a4cd2 # Nehalem
       :nehalem
+    when 0x573B5EEC # Arrandale
+      :arrandale
     else
       :dunno
     end