diff --git a/test/unit/issue_test.rb b/test/unit/issue_test.rb
index 1049330..ff98711 100644
--- a/test/unit/issue_test.rb
+++ b/test/unit/issue_test.rb
@@ -164,6 +164,10 @@ class IssueTest < ActiveSupport::TestCase
     assert_equal [], projects.select {|p| !p.is_or_is_descendant_of?(project)}
   end
   
+  def test_visible_and_nested_set_scopes
+    assert_equal 0, Issue.find(1).descendants.visible.all.size
+  end
+  
   def test_errors_full_messages_should_include_custom_fields_errors
     field = IssueCustomField.find_by_name('Database')
     
diff --git a/vendor/plugins/awesome_nested_set/lib/awesome_nested_set.rb b/vendor/plugins/awesome_nested_set/lib/awesome_nested_set.rb
index b1e5ae1..f46fb43 100644
--- a/vendor/plugins/awesome_nested_set/lib/awesome_nested_set.rb
+++ b/vendor/plugins/awesome_nested_set/lib/awesome_nested_set.rb
@@ -425,7 +425,7 @@ module CollectiveIdea #:nodoc:
         # the base ActiveRecord class, using the :scope declared in the acts_as_nested_set
         # declaration.
         def nested_set_scope
-          options = {:order => quoted_left_column_name}
+          options = {:order => "#{self.class.table_name}.#{quoted_left_column_name}"}
           scopes = Array(acts_as_nested_set_options[:scope])
           options[:conditions] = scopes.inject({}) do |conditions,attr|
             conditions.merge attr => self[attr]