diff --git a/Library/Homebrew/install.rb b/Library/Homebrew/install.rb
index 24b02c78e9..c4adcfe94f 100644
--- a/Library/Homebrew/install.rb
+++ b/Library/Homebrew/install.rb
@@ -125,7 +125,7 @@ module Homebrew
         # dependencies. Therefore before performing other checks we need to be
         # sure --force flag is passed.
         if f.outdated?
-          unless Homebrew::EnvConfig.no_install_upgrade?
+          if !Homebrew::EnvConfig.no_install_upgrade? && !f.pinned?
             puts "#{f.name} #{f.linked_version} is already installed but outdated (so it will be upgraded)."
             return true
           end
@@ -215,7 +215,7 @@ module Homebrew
       elsif f.linked?
         message = "#{f.name} #{f.linked_version} is already installed"
         if f.outdated? && !head
-          unless Homebrew::EnvConfig.no_install_upgrade?
+          if !Homebrew::EnvConfig.no_install_upgrade? && !f.pinned?
             puts "#{message} but outdated (so it will be upgraded)."
             return true
           end