diff --git a/examples/rails.prspecd b/examples/rails.prspecd
new file mode 100644
index 0000000..977f479
--- /dev/null
+++ b/examples/rails.prspecd
@@ -0,0 +1,31 @@
+
+prefetch {
+  require 'pathname'
+  ENV["PRSPEC"] = 'true'
+  ENV["RAILS_ENV"] ||= 'test'
+  envfile = Pathname.new(File.expand_path(Dir.pwd + "/config/environments/#{ENV["RAILS_ENV"]}.rb"))
+  unless envfile.read.match(/ENV.+PRSPEC/)
+    color("!!! set cache_classes (for reload classes) !!!", 31)
+    warn "Please replace #{envfile} settings."
+    mes = "  config.cache_classes = ENV.has_key?('PRSPEC') ? false : true  "
+    warn '-' * mes.length
+    warn mes
+    warn '-' * mes.length
+  end
+  require File.expand_path(Dir.pwd + "/config/environment")
+  Rails.application.config.cache_classes = false
+  require 'rspec/rails'
+}
+
+before_run {
+  ActionDispatch::Callbacks.new(Proc.new {}, false).call({})
+  ActiveSupport::DescendantsTracker.clear
+  ActiveSupport::Dependencies.clear
+  Rails.application.config.cache_classes = true
+  ActiveSupport::Dependencies.mechanism = :require
+  require 'spec/spec_helper'
+}
+
+# after_run {
+# }
+
diff --git a/lib/prefetch_rspec.rb b/lib/prefetch_rspec.rb
index 8ecdd74..28ebebc 100644
--- a/lib/prefetch_rspec.rb
+++ b/lib/prefetch_rspec.rb
@@ -29,6 +29,8 @@ def optparse(args)
         case arg
         when /^--port=(\d+)$/
           @options[:port] = $1.to_i
+        when /^--rails$/
+          @options[:rails] = true
         when /^--bundler$/
           @options[:bundler] = true
         when /^--drb$/
@@ -221,18 +223,37 @@ def call_after_run(err, out)
     end
 
     def load_config_prspecd
-      require 'pathname'
       dot_prspecd = Pathname.new(Dir.pwd).join('.prspecd')
       if dot_prspecd.exist?
         self.instance_eval dot_prspecd.read, dot_prspecd.to_s
-        color("load .prspecd")
       else
-        color(".prspecd not found", 31)
+      end
+    end
+
+    def load_config(path)
+      if path.exist?
+        self.instance_eval path.read, path.to_s
+        color("#{path} loaded")
+      else
+        color("#{path} not found", 31)
+        self.class.force_exit!
+      end
+    end
+
+    def detect_load_config
+      require 'pathname'
+      if options[:rails]
+        load_config Pathname.new(File.expand_path(__FILE__)).parent.parent.join('examples/rails.prspecd')
+      elsif options[:args].first
+        load_config Pathname.new(Dir.pwd).join(args.first)
+      else
+        load_config(Pathname.new(Dir.pwd).join('.prspecd'))
       end
     end
 
     def listen
-      load_config_prspecd
+      detect_load_config
+
       begin
         @drb_service = DRb.start_service(drb_uri, self)
       rescue DRb::DRbConnError => e
diff --git a/spec/prefetch_rspec_spec.rb b/spec/prefetch_rspec_spec.rb
index 57783c1..fcd6e05 100644
--- a/spec/prefetch_rspec_spec.rb
+++ b/spec/prefetch_rspec_spec.rb
@@ -7,6 +7,7 @@
       it "default" do
         options = PrefetchRspec::Base.new([]).options
         options[:args].should be_empty
+        options[:rails].should be_nil
         options[:port].should be_nil
         options[:bundler].should be_nil
       end
@@ -31,6 +32,11 @@
         base = PrefetchRspec::Base.new(['--bundler', 'a'])
         base.options[:bundler].should be_true
       end
+
+      it "rails option" do
+        base = PrefetchRspec::Base.new(['--rails', 'a'])
+        base.options[:rails].should be_true
+      end
     end
   end
 
@@ -55,6 +61,7 @@ def server(args = [])
       unless @server 
         @server = PrefetchRspec::Server.new(args)
         @server.stub(:color)
+        @server.stub(:detect_load_config)
       end
       @server
     end