diff --git a/lib/mactag/builder.rb b/lib/mactag/builder.rb
index <HASH>..<HASH> 100644
--- a/lib/mactag/builder.rb
+++ b/lib/mactag/builder.rb
@@ -37,7 +37,7 @@ module Mactag
       end
 
       if @builder.gems?
-        system "cd #{Rails.root} && #{Mactag::Config.binary} #{@builder.files.join(' ')}"
+        system "cd #{Rails.root} && #{Mactag::Config.binary} #{builder.files.join(' ')}"
 
         puts "Successfully generated TAGS file"
       else
@@ -55,5 +55,9 @@ module Mactag
     def self.gem_home_exists?
       File.directory?(Mactag::Config.gem_home)
     end
+    
+    def self.builder
+      @builder
+    end
   end
 end
diff --git a/spec/mactag/builder_spec.rb b/spec/mactag/builder_spec.rb
index <HASH>..<HASH> 100644
--- a/spec/mactag/builder_spec.rb
+++ b/spec/mactag/builder_spec.rb
@@ -105,4 +105,11 @@ describe Mactag::Builder do
       Mactag::Builder.gem_home_exists?.should be_false
     end
   end
+  
+  describe '#builder' do
+    it 'should return builder instance' do
+      Mactag::Builder.generate {}
+      Mactag::Builder.builder.should == Mactag::Builder.instance_variable_get('@builder')
+    end
+  end
 end
Added method that return builder.