diff --git a/railties/lib/commands/process/spawner.rb b/railties/lib/commands/process/spawner.rb
index 0a34bd6e4b9e4..8fdfab945a3b2 100644
--- a/railties/lib/commands/process/spawner.rb
+++ b/railties/lib/commands/process/spawner.rb
@@ -114,9 +114,9 @@ def self.can_bind_to_custom_address?
 OPTIONS = {
   :environment => "production",
   :spawner     => '/usr/bin/env spawn-fcgi',
-  :dispatcher  => File.expand_path(RAILS_ROOT + '/public/dispatch.fcgi'),
-  :pids        => File.expand_path(RAILS_ROOT + "/tmp/pids"),
-  :rails_root  => File.expand_path(RAILS_ROOT),
+  :dispatcher  => File.expand_path(RELATIVE_RAILS_ROOT + '/public/dispatch.fcgi'),
+  :pids        => File.expand_path(RELATIVE_RAILS_ROOT + "/tmp/pids"),
+  :rails_root  => File.expand_path(RELATIVE_RAILS_ROOT),
   :process     => "dispatch",
   :port        => 8000,
   :address     => '0.0.0.0',
diff --git a/railties/lib/initializer.rb b/railties/lib/initializer.rb
index 6b9a5ae2aeaf7..b391be6accd71 100644
--- a/railties/lib/initializer.rb
+++ b/railties/lib/initializer.rb
@@ -502,7 +502,8 @@ def set_root_path!
         else
           Pathname.new(::RAILS_ROOT).realpath.to_s
         end
-
+      
+      Object.const_set(:RELATIVE_RAILS_ROOT, ::RAILS_ROOT.dup) unless defined?(::RELATIVE_RAILS_ROOT)
       ::RAILS_ROOT.replace @root_path
     end