diff --git a/lib/vagrant-lxc/action/warn_networks.rb b/lib/vagrant-lxc/action/warn_networks.rb
index f060080..fed6bd9 100644
--- a/lib/vagrant-lxc/action/warn_networks.rb
+++ b/lib/vagrant-lxc/action/warn_networks.rb
@@ -7,15 +7,15 @@ module Vagrant
         end
 
         def call(env)
-          if public_or_private_network_configured?
+          if public_or_private_network_configured?(env[:machine].config)
             env[:ui].warn(I18n.t("vagrant_lxc.messages.warn_networks"))
           end
 
           @app.call(env)
         end
 
-        def public_or_private_network_configured?
-          config.vm.networks.find do |type|
+        def public_or_private_network_configured?(config)
+          config.vm.networks.find do |type, _|
             [:private_network, :public_network].include?(type.to_sym)
           end
         end
diff --git a/locales/en.yml b/locales/en.yml
index 2b6f519..8a24d1d 100644
--- a/locales/en.yml
+++ b/locales/en.yml
@@ -19,7 +19,7 @@ en:
         Container started and ready for use!
       warn_networks: |-
         Warning! The LXC provider doesn't support any of the Vagrant public / private
-        network configurations (`config.vm.network :private_network, ip: "some-ip"`).
+        network configurations (ex: `config.vm.network :private_network, ip: "some-ip"`).
         They will be silently ignored.
 
   vagrant: