diff --git a/test/functional/issues_controller_test.rb b/test/functional/issues_controller_test.rb
index 7efaa22e5..4a69019a9 100644
--- a/test/functional/issues_controller_test.rb
+++ b/test/functional/issues_controller_test.rb
@@ -1405,6 +1405,11 @@ class IssuesControllerTest < ActionController::TestCase
     assert @response.body.starts_with?('%PDF')
   end
 
+  def test_show_invalid_should_respond_with_404
+    get :show, :id => 999
+    assert_response 404
+  end
+
   def test_get_new
     @request.session[:user_id] = 2
     get :new, :project_id => 1, :tracker_id => 1
@@ -3813,6 +3818,14 @@ class IssuesControllerTest < ActionController::TestCase
     assert_response 302
   end
 
+  def test_destroy_invalid_should_respond_with_404
+    @request.session[:user_id] = 2
+    assert_no_difference 'Issue.count' do
+      delete :destroy, :id => 999
+    end
+    assert_response 404
+  end
+
   def test_default_search_scope
     get :index
     assert_tag :div, :attributes => {:id => 'quick-search'},