diff --git a/Library/Homebrew/install.rb b/Library/Homebrew/install.rb
index 21b5716e6c10519ea226549f8449a417b63dae22..50347a38841bca08d361442a37875d61e3cc4d1b 100644
--- a/Library/Homebrew/install.rb
+++ b/Library/Homebrew/install.rb
@@ -257,7 +257,9 @@ module Homebrew
           #{f.name} #{f.linked_version} is installed but outdated
             Upgrading #{Formatter.identifier(f.name)} #{version_upgrade}
         EOS
-        outdated_kegs = outdated_formulae.map(&:linked_keg).select(&:directory?).map { |k| Keg.new(k.resolved_path) }
+        outdated_kegs = outdated_formulae.map(&:linked_keg)
+                                         .select(&:directory?)
+                                         .map { |k| Keg.new(k.resolved_path) }
         linked_kegs = outdated_kegs.select(&:linked?)
       end