diff --git a/plugins/hosts/darwin/cap/fs_iso.rb b/plugins/hosts/darwin/cap/fs_iso.rb
index 98ed30d2c..7f9d819a1 100644
--- a/plugins/hosts/darwin/cap/fs_iso.rb
+++ b/plugins/hosts/darwin/cap/fs_iso.rb
@@ -25,12 +25,14 @@ module VagrantPlugins
         #
         # @param [Vagrant::Environment] env
         # @param [String] source_directory Contents of ISO
-        # @param [String, nil] file_destination Location to store ISO
         # @param [Map] extra arguments to pass to the iso building command
+        #              :file_destination (string) location to store ISO
+        #              :volume_id (String) to set the volume name 
         # @return [Pathname] ISO location
         # @note If file_destination exists, source_directory will be checked
         #       for recent modifications and a new ISO will be generated if requried.
-        def self.create_iso(env, source_directory, file_destination=nil, extra_opts={})
+        def self.create_iso(env, source_directory, **extra_opts)
+          file_destination = extra_opts[:file_destination]
           source_directory = Pathname.new(source_directory)
           if file_destination.nil?
             @@logger.info("No file destination specified, creating temp location")
@@ -42,7 +44,7 @@ module VagrantPlugins
             # If the file destination path is a folder, target the output to a randomly named
             # file in that dir
             if file_destination.extname != ".iso"
-              file_destination = file_destination.join("#{rand(36**6).to_s(36)}_vagrant.iso")
+              file_destination = file_destination.join("#{SecureRandom.hex(3)}_vagrant.iso")
             end
           end
           # Ensure destination directory is available
@@ -56,7 +58,7 @@ module VagrantPlugins
             iso_command << "-iso"
             iso_command << "-joliet"
             iso_command << "-ov"
-            iso_command.concat(Vagrant::Util::MapCommandOptions.map_to_command_options(extra_opts, cmd_flag="-"))
+            iso_command.concat(["-default-volume-name", extra_opts[:volume_id]]) if extra_opts[:volume_id]
             iso_command << "-o"
             iso_command << file_destination.to_s
             iso_command << source_directory.to_s
diff --git a/test/unit/plugins/hosts/darwin/cap/fs_iso_test.rb b/test/unit/plugins/hosts/darwin/cap/fs_iso_test.rb
index 47e213e71..199b65cbb 100644
--- a/test/unit/plugins/hosts/darwin/cap/fs_iso_test.rb
+++ b/test/unit/plugins/hosts/darwin/cap/fs_iso_test.rb
@@ -33,16 +33,16 @@ describe VagrantPlugins::HostDarwin::Cap::FsISO do
         "hdiutil", "makehybrid", "-hfs", "-iso", "-joliet", "-ov", "-o", /.iso/, /\/foo\/src/
       ).and_return(double(exit_code: 0))
 
-      output = subject.create_iso(env, "/foo/src", "/woo/out.iso")
+      output = subject.create_iso(env, "/foo/src", file_destination: "/woo/out.iso")
       expect(output.to_s).to eq("/woo/out.iso")
     end
 
-    it "builds an iso with args" do
+    it "builds an iso with volume_id" do
       expect(Vagrant::Util::Subprocess).to receive(:execute).with(
         "hdiutil", "makehybrid", "-hfs", "-iso", "-joliet", "-ov", "-default-volume-name", "cidata", "-o", /.iso/, /\/foo\/src/
       ).and_return(double(exit_code: 0))
 
-      output = subject.create_iso(env, "/foo/src", "/woo/out.iso", extra_opts={"default-volume-name" => "cidata"})
+      output = subject.create_iso(env, "/foo/src", file_destination: "/woo/out.iso", volume_id: "cidata")
       expect(output.to_s).to eq("/woo/out.iso")
     end
 
@@ -51,13 +51,25 @@ describe VagrantPlugins::HostDarwin::Cap::FsISO do
         "hdiutil", "makehybrid", "-hfs", "-iso", "-joliet", "-ov", "-o", /.iso/, /\/foo\/src/
       ).and_return(double(exit_code: 0))
 
-      output = subject.create_iso(env, "/foo/src", "/woo/out_dir")
+      output = subject.create_iso(env, "/foo/src", file_destination: "/woo/out_dir")
       expect(output.to_s).to match(/\/woo\/out_dir\/[\w]{6}_vagrant.iso/)
     end
 
+    it "builds an iso when no file destination is given" do
+      allow(Tempfile).to receive(:new).and_return(file_destination)
+      allow(file_destination).to receive(:path).and_return(file_destination)
+      allow(file_destination).to receive(:delete)
+      expect(Vagrant::Util::Subprocess).to receive(:execute).with(
+        "hdiutil", "makehybrid", "-hfs", "-iso", "-joliet", "-ov", "-o", /.iso/, /\/foo\/src/
+      ).and_return(double(exit_code: 0))
+
+      output = subject.create_iso(env, "/foo/src")
+      expect(output.to_s).to eq(file_destination)
+    end
+
     it "raises an error if iso build failed" do
       allow(Vagrant::Util::Subprocess).to receive(:execute).with(any_args).and_return(double(stdout: "nope", stderr: "nope", exit_code: 1))
-      expect{ subject.create_iso(env, "/foo/src", "/woo/out.iso") }.to raise_error(Vagrant::Errors::ISOBuildFailed)
+      expect{ subject.create_iso(env, "/foo/src") }.to raise_error(Vagrant::Errors::ISOBuildFailed)
     end
   end
 end