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-rw-r--r--spec/ruby/language/method_spec.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/spec/ruby/language/method_spec.rb b/spec/ruby/language/method_spec.rb
index e34ff7e1a6..9abe4cde20 100644
--- a/spec/ruby/language/method_spec.rb
+++ b/spec/ruby/language/method_spec.rb
@@ -1459,7 +1459,7 @@ ruby_version_is "3.1" do
describe "Inside 'endless' method definitions" do
it "allows method calls without parenthesis" do
eval <<-ruby
- def greet(person) = "Hi, ".concat person
+ def greet(person) = "Hi, ".dup.concat person
ruby
greet("Homer").should == "Hi, Homer"