diff --git a/lib/puppet/interface/v0.0.1/config.rb b/lib/puppet/interface/v0.0.1/config.rb
index b33e19bb4..7b74ce542 100644
--- a/lib/puppet/interface/v0.0.1/config.rb
+++ b/lib/puppet/interface/v0.0.1/config.rb
@@ -1,10 +1,11 @@
 require 'puppet/interface'
 
 Puppet::Interface.define(:config, '0.0.1') do
   action(:print) do
     invoke do |*args|
       Puppet.settings[:configprint] = args.join(",")
       Puppet.settings.print_config_options
+      nil
     end
   end
 end
diff --git a/spec/unit/interface/config_spec.rb b/spec/unit/interface/config_spec.rb
index a2ec7b528..2e82b0b08 100644
--- a/spec/unit/interface/config_spec.rb
+++ b/spec/unit/interface/config_spec.rb
@@ -1,18 +1,24 @@
 #!/usr/bin/env ruby
 
 require File.expand_path(File.dirname(__FILE__) + '/../../spec_helper.rb')
 
 describe Puppet::Interface.define(:config, '0.0.1') do
   it "should use Settings#print_config_options when asked to print" do
     Puppet.settings.stubs(:puts)
     Puppet.settings.expects(:print_config_options)
     subject.print
   end
 
   it "should set 'configprint' to all desired values and call print_config_options when a specific value is provided" do
     Puppet.settings.stubs(:puts)
     Puppet.settings.expects(:print_config_options)
     subject.print("libdir", "ssldir")
     Puppet.settings[:configprint].should == "libdir,ssldir"
   end
+
+  it "should always return nil" do
+    Puppet.settings.stubs(:puts)
+    Puppet.settings.expects(:print_config_options)
+    subject.print("libdir").should be_nil
+  end
 end