diff --git a/Library/Homebrew/tap_migrations.rb b/Library/Homebrew/tap_migrations.rb
index ca22318aac..4a7e8c0b15 100644
--- a/Library/Homebrew/tap_migrations.rb
+++ b/Library/Homebrew/tap_migrations.rb
@@ -131,7 +131,8 @@ TAP_MIGRATIONS = {
   "lilypond" => "homebrew/tex",
   "lmutil" => "homebrew/binary",
   "magit" => "homebrew/emacs",
-  "meld" => "homebrew/x11",
+  "mat" => "homebrew/boneyard",
+  "meld" => "homebrew/gui",
   "mesalib-glw" => "homebrew/x11",
   "mess" => "homebrew/games",
   "metalua" => "homebrew/boneyard",