diff --git a/spec/unit/openstack_server_create_spec.rb b/spec/unit/openstack_server_create_spec.rb
index 3d8d1c60..fa5756b0 100644
--- a/spec/unit/openstack_server_create_spec.rb
+++ b/spec/unit/openstack_server_create_spec.rb
@@ -13,10 +13,17 @@
   it_behaves_like Chef::Knife::Cloud::ServerCreateCommand, Chef::Knife::Cloud::OpenstackServerCreate.new
   
   describe "#create_service_instance" do
+    before(:each) do
+      @instance = Chef::Knife::Cloud::OpenstackServerCreate.new
+    end
+
     it "return OpenstackService instance" do
-      instance = Chef::Knife::Cloud::OpenstackServerCreate.new
-      expect(instance.create_service_instance).to be_an_instance_of(Chef::Knife::Cloud::OpenstackService)
+      expect(@instance.create_service_instance).to be_an_instance_of(Chef::Knife::Cloud::OpenstackService)
     end
+
+    it "has custom_arguments as its option" do
+      expect(@instance.options.include? :custom_attributes).to be true
+     end
   end
 
   describe "#validate_params!" do