diff --git a/spec/controllers/users_controller_spec.rb b/spec/controllers/users_controller_spec.rb
index 03e5b2388..4c5cfe76d 100644
--- a/spec/controllers/users_controller_spec.rb
+++ b/spec/controllers/users_controller_spec.rb
@@ -31,7 +31,7 @@ describe UsersController do
   describe '#public' do
     it 'renders xml' do
       sm = Factory(:status_message, :public => true, :author => @user.person)
-      get :public, :username => @user.username
+      get :public, :username => @user.username, :format => :atom
       response.body.should include(sm.text)
     end
   end