1 files changed, 2 insertions, 4 deletions
diff --git a/spec/mspec/spec/mocks/mock_spec.rb b/spec/mspec/spec/mocks/mock_spec.rb
index 1a7fb2d567..d996b5285c 100644
--- a/spec/mspec/spec/mocks/mock_spec.rb
+++ b/spec/mspec/spec/mocks/mock_spec.rb
@@ -22,16 +22,14 @@ end
 describe Mock, ".replaced_name" do
   it "returns the name for a method that is being replaced by a mock method" do
     m = double('a fake id')
-    m.stub(:__mspec_object_id__).and_return(42)
-    Mock.replaced_name(m, :method_call).should == :__mspec_42_method_call__
+    Mock.replaced_name(m, :method_call).should == :"__mspec_#{m.object_id}_method_call__"
   end
 end
 
 describe Mock, ".replaced_key" do
   it "returns a key used internally by Mock" do
     m = double('a fake id')
-    m.stub(:__mspec_object_id__).and_return(42)
-    Mock.replaced_key(m, :method_call).should == [:__mspec_42_method_call__, :method_call]
+    Mock.replaced_key(m, :method_call).should == [:"__mspec_#{m.object_id}_method_call__", :method_call]
   end
 end