diff --git a/lib/vagrant-lxc/container/cli.rb b/lib/vagrant-lxc/container/cli.rb
index 01bce47..2939233 100644
--- a/lib/vagrant-lxc/container/cli.rb
+++ b/lib/vagrant-lxc/container/cli.rb
@@ -46,8 +46,8 @@ module Vagrant
           run :destroy, '--name', @name
         end
 
-        def start(configs = {})
-          configs = configs.map { |key, value| ["-s", "#{key}=#{value}"] }.flatten
+        def start(configs = [])
+          configs = configs.map { |conf| ["-s", conf] }.flatten
           run :start, '-d', '--name', @name, *configs
         end
 
diff --git a/spec/unit/container/cli_spec.rb b/spec/unit/container/cli_spec.rb
index 11152eb..9a797a7 100644
--- a/spec/unit/container/cli_spec.rb
+++ b/spec/unit/container/cli_spec.rb
@@ -82,7 +82,7 @@ describe Vagrant::LXC::Container::CLI do
     end
 
     it 'uses provided hash to configure the container' do
-      subject.start('lxc.config' => 'value', 'lxc.other' => 'value')
+      subject.start(['lxc.config=value', 'lxc.other=value'])
       subject.should have_received(:run).with(:start, '-d', '--name', name,
         '-s', 'lxc.config=value',
         '-s', 'lxc.other=value'