diff --git a/Library/Homebrew/cmd/upgrade.rb b/Library/Homebrew/cmd/upgrade.rb
index c7190f5bc6..aed64d78e9 100644
--- a/Library/Homebrew/cmd/upgrade.rb
+++ b/Library/Homebrew/cmd/upgrade.rb
@@ -81,7 +81,7 @@ module Homebrew
           opoo "#{f.full_specified_name} #{version} already installed"
         end
       end
-      exit
+      return if outdated.empty?
     end
 
     pinned = outdated.select(&:pinned?)