diff --git a/.rubocop.yml b/.rubocop.yml
index ee900f8..e0c561b 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -11,6 +11,7 @@ AllCops:
     - 'vendor/**/*'
     - Gemfile
     - Rakefile
+    - Vagrantfile
 
 Style/Documentation:
   Enabled: false
diff --git a/lib/vmpooler/providers/vsphere.rb b/lib/vmpooler/providers/vsphere.rb
index c77f651..f828e8d 100644
--- a/lib/vmpooler/providers/vsphere.rb
+++ b/lib/vmpooler/providers/vsphere.rb
@@ -571,7 +571,7 @@ module Vmpooler
           datacenter.hostFolder.children.find { |cluster_object| cluster_object.name == cluster }
         end
 
-        def get_cluster_host_utilization(cluster, model=nil)
+        def get_cluster_host_utilization(cluster, model = nil)
           cluster_hosts = []
           cluster.host.each do |host|
             host_usage = get_host_utilization(host, model)