diff --git a/test/unit/plugins/guests/linux/cap/mount_shared_folder_test.rb b/test/unit/plugins/guests/linux/cap/mount_shared_folder_test.rb
index 714e633d8..42f666c30 100644
--- a/test/unit/plugins/guests/linux/cap/mount_shared_folder_test.rb
+++ b/test/unit/plugins/guests/linux/cap/mount_shared_folder_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 describe "VagrantPlugins::GuestLinux::Cap::MountSharedFolder" do
   let(:machine) { double("machine") }
diff --git a/test/unit/plugins/guests/smartos/cap/change_host_name_test.rb b/test/unit/plugins/guests/smartos/cap/change_host_name_test.rb
index 1d9a84692..3c91edf92 100644
--- a/test/unit/plugins/guests/smartos/cap/change_host_name_test.rb
+++ b/test/unit/plugins/guests/smartos/cap/change_host_name_test.rb
@@ -1,4 +1,5 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
+require_relative "../../../../../../plugins/guests/smartos/config"
 
 describe "VagrantPlugins::VagrantPlugins::Cap::ChangeHostName" do
   let(:plugin) { VagrantPlugins::GuestSmartos::Plugin.components.guest_capabilities[:smartos].get(:change_host_name) }
@@ -30,4 +31,3 @@ describe "VagrantPlugins::VagrantPlugins::Cap::ChangeHostName" do
     end
   end
 end
-
diff --git a/test/unit/plugins/guests/smartos/cap/configure_networks_test.rb b/test/unit/plugins/guests/smartos/cap/configure_networks_test.rb
index ca47a988f..7d6312a24 100644
--- a/test/unit/plugins/guests/smartos/cap/configure_networks_test.rb
+++ b/test/unit/plugins/guests/smartos/cap/configure_networks_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 describe "VagrantPlugins::VagrantPlugins::Cap::ConfigureNetworks" do
   let(:plugin) { VagrantPlugins::GuestSmartos::Plugin.components.guest_capabilities[:smartos].get(:configure_networks) }
diff --git a/test/unit/plugins/guests/smartos/cap/halt_test.rb b/test/unit/plugins/guests/smartos/cap/halt_test.rb
index 782fc6b09..664b77ec8 100644
--- a/test/unit/plugins/guests/smartos/cap/halt_test.rb
+++ b/test/unit/plugins/guests/smartos/cap/halt_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 describe "VagrantPlugins::VagrantPlugins::Cap::Halt" do
   let(:plugin) { VagrantPlugins::GuestSmartos::Plugin.components.guest_capabilities[:smartos].get(:halt) }
diff --git a/test/unit/plugins/guests/smartos/cap/mount_nfs_test.rb b/test/unit/plugins/guests/smartos/cap/mount_nfs_test.rb
index b4038f76a..d41dcd808 100644
--- a/test/unit/plugins/guests/smartos/cap/mount_nfs_test.rb
+++ b/test/unit/plugins/guests/smartos/cap/mount_nfs_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 describe "VagrantPlugins::VagrantPlugins::Cap::MountNFS" do
   let(:plugin) { VagrantPlugins::GuestSmartos::Plugin.components.guest_capabilities[:smartos].get(:mount_nfs_folder) }
diff --git a/test/unit/plugins/guests/smartos/cap/rsync_test.rb b/test/unit/plugins/guests/smartos/cap/rsync_test.rb
index ed2b20e78..1c3deb716 100644
--- a/test/unit/plugins/guests/smartos/cap/rsync_test.rb
+++ b/test/unit/plugins/guests/smartos/cap/rsync_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 describe "VagrantPlugins::VagrantPlugins::Cap::Rsync" do
   let(:plugin) { VagrantPlugins::GuestSmartos::Plugin.components.guest_capabilities[:smartos].get(:rsync_installed) }
diff --git a/test/unit/plugins/guests/tinycore/cap/change_host_name_test.rb b/test/unit/plugins/guests/tinycore/cap/change_host_name_test.rb
index ba258261f..ce43cf84c 100644
--- a/test/unit/plugins/guests/tinycore/cap/change_host_name_test.rb
+++ b/test/unit/plugins/guests/tinycore/cap/change_host_name_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 describe "VagrantPlugins::GuestTinyCore::Cap::ChangeHostName" do
   let(:described_class) do
diff --git a/test/unit/plugins/guests/windows/cap/change_host_name_test.rb b/test/unit/plugins/guests/windows/cap/change_host_name_test.rb
index 1f8b45170..33bf261ba 100644
--- a/test/unit/plugins/guests/windows/cap/change_host_name_test.rb
+++ b/test/unit/plugins/guests/windows/cap/change_host_name_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 require Vagrant.source_root.join("plugins/guests/windows/cap/change_host_name")
 
diff --git a/test/unit/plugins/guests/windows/cap/halt_test.rb b/test/unit/plugins/guests/windows/cap/halt_test.rb
index da4f51f38..913cba188 100644
--- a/test/unit/plugins/guests/windows/cap/halt_test.rb
+++ b/test/unit/plugins/guests/windows/cap/halt_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 require Vagrant.source_root.join("plugins/guests/windows/cap/halt")
 
diff --git a/test/unit/plugins/guests/windows/cap/mount_shared_folder_test.rb b/test/unit/plugins/guests/windows/cap/mount_shared_folder_test.rb
index bd443142b..851c71da7 100644
--- a/test/unit/plugins/guests/windows/cap/mount_shared_folder_test.rb
+++ b/test/unit/plugins/guests/windows/cap/mount_shared_folder_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 require Vagrant.source_root.join("plugins/guests/windows/cap/mount_shared_folder")
 
diff --git a/test/unit/plugins/guests/windows/cap/reboot_test.rb b/test/unit/plugins/guests/windows/cap/reboot_test.rb
index 8297b9a26..afa50d381 100644
--- a/test/unit/plugins/guests/windows/cap/reboot_test.rb
+++ b/test/unit/plugins/guests/windows/cap/reboot_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 require Vagrant.source_root.join("plugins/guests/windows/cap/reboot")
 
diff --git a/test/unit/plugins/guests/windows/cap/rsync_test.rb b/test/unit/plugins/guests/windows/cap/rsync_test.rb
index e28a5b3fb..d32568c40 100644
--- a/test/unit/plugins/guests/windows/cap/rsync_test.rb
+++ b/test/unit/plugins/guests/windows/cap/rsync_test.rb
@@ -1,4 +1,4 @@
-require File.expand_path("../../../../../base", __FILE__)
+require_relative "../../../../base"
 
 require Vagrant.source_root.join("plugins/guests/windows/cap/rsync")