diff --git a/Library/Homebrew/install.rb b/Library/Homebrew/install.rb
index 8d7ef97e2d..1b28fff4f8 100644
--- a/Library/Homebrew/install.rb
+++ b/Library/Homebrew/install.rb
@@ -258,7 +258,7 @@ module Homebrew
             Upgrading #{Formatted.identifier(f.name)} #{version_upgrade}
         EOS
         outdated_kegs = outdated_formulae.map(&:linked_keg).select(&:directory?).map { |k| Keg.new(k.resolved_path) }
-        linked_kegs = outdated_kegs.select(&:linked)
+        linked_kegs = outdated_kegs.select(&:linked?)
       end
 
       fi = FormulaInstaller.new(