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-rw-r--r--spec/ruby/language/singleton_class_spec.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/spec/ruby/language/singleton_class_spec.rb b/spec/ruby/language/singleton_class_spec.rb
index 9d037717b2..45e1f7f3ad 100644
--- a/spec/ruby/language/singleton_class_spec.rb
+++ b/spec/ruby/language/singleton_class_spec.rb
@@ -70,7 +70,7 @@ describe "A singleton class" do
end
it "has class String as the superclass of a String instance" do
- "blah".singleton_class.superclass.should == String
+ "blah".dup.singleton_class.superclass.should == String
end
it "doesn't have singleton class" do