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diff --git a/spec/ruby/1.8/core/marshal/fixtures/marshal_data.rb b/spec/ruby/1.8/core/marshal/fixtures/marshal_data.rb
index d0a9e0b..f427f75 100644
--- a/spec/ruby/1.8/core/marshal/fixtures/marshal_data.rb
+++ b/spec/ruby/1.8/core/marshal/fixtures/marshal_data.rb
@@ -234,3 +234,7 @@ module MarshalSpec
   }
 end
 
+class MarshallSingleton
+  require 'singleton'
+  include Singleton
+end
diff --git a/spec/ruby/1.8/core/marshal/load_spec.rb b/spec/ruby/1.8/core/marshal/load_spec.rb
index aaa18e1..737c98c 100644
--- a/spec/ruby/1.8/core/marshal/load_spec.rb
+++ b/spec/ruby/1.8/core/marshal/load_spec.rb
@@ -225,4 +225,12 @@ describe "Marshal::load" do
       Marshal.load(marshal).should == object
     end
   end
+  
+  ruby_bug do
+    # http://rubyforge.org/tracker/index.php?func=detail&aid=19377&group_id=426&atid=1698
+    it "should return the sole instance of a class with Singleton included" do
+      instance = MarshalSingleton.instance
+      instance.equal?(Marshal.load(Marshal.dump(instance))).should == true
+    end
+  end
 end