diff --git a/activerecord/lib/active_record/named_scope.rb b/activerecord/lib/active_record/named_scope.rb
index 0f421560f087430894f4902dc0f1a6deabf7db82..d29163226024f90e7e69b750edc044a4463fc044 100644
--- a/activerecord/lib/active_record/named_scope.rb
+++ b/activerecord/lib/active_record/named_scope.rb
@@ -102,10 +102,9 @@ def scoped(options = nil)
       def scope(name, scope_options = {})
         name = name.to_sym
         valid_scope_name?(name)
-
         extension = Module.new(&Proc.new) if block_given?
 
-        scopes[name] = lambda do |*args|
+        scope_proc = lambda do |*args|
           options = scope_options.respond_to?(:call) ? scope_options.call(*args) : scope_options
 
           relation = if options.is_a?(Hash)
@@ -119,6 +118,8 @@ def scope(name, scope_options = {})
           extension ? relation.extending(extension) : relation
         end
 
+        self.scopes = self.scopes.merge name => scope_proc
+
         singleton_class.send(:redefine_method, name, &scopes[name])
       end
 
diff --git a/activerecord/test/cases/named_scope_test.rb b/activerecord/test/cases/named_scope_test.rb
index d05b0ff9471bf355eaf68ebf9150ba9d5d360605..fb050c3e52698908c7ac5c9bfcce692bcbcea8e4 100644
--- a/activerecord/test/cases/named_scope_test.rb
+++ b/activerecord/test/cases/named_scope_test.rb
@@ -64,6 +64,10 @@ def test_subclasses_inherit_scopes
     assert Reply.scopes.include?(:base)
     assert_equal Reply.find(:all), Reply.base
   end
+  
+  def test_classes_dont_inherit_subclasses_scopes
+    assert !ActiveRecord::Base.scopes.include?(:base)
+  end
 
   def test_scopes_with_options_limit_finds_to_those_matching_the_criteria_specified
     assert !Topic.find(:all, :conditions => {:approved => true}).empty?