diff --git a/Library/Homebrew/cmd/upgrade.rb b/Library/Homebrew/cmd/upgrade.rb
index 7ebd0b477e..c19cce8f0b 100644
--- a/Library/Homebrew/cmd/upgrade.rb
+++ b/Library/Homebrew/cmd/upgrade.rb
@@ -105,7 +105,7 @@ module Homebrew
           "#{f.full_specified_name} #{f.pkg_version}"
         end
       end
-      puts formulae_upgrades.join(", ")
+      puts formulae_upgrades.join("\n")
     end
     return if args.dry_run?