diff --git a/Vagrantfile b/Vagrantfile
index 0520036144f..3ef5436c056 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -122,6 +122,12 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
     config.proxy.https    = $https_proxy
     config.proxy.no_proxy = $no_proxy
   end
+
+  # this corrects a bug in 1.8.5 where an invalid SSH key is inserted.
+  if Vagrant::VERSION == "1.8.5"
+    config.ssh.insert_key = false
+  end
+
   def setvmboxandurl(config, provider)
     if ENV['KUBERNETES_BOX_NAME'] then
       config.vm.box = ENV['KUBERNETES_BOX_NAME']