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-rw-r--r--spec/ruby/core/dir/entries_spec.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/spec/ruby/core/dir/entries_spec.rb b/spec/ruby/core/dir/entries_spec.rb
index 91c30fccae..7462542acf 100644
--- a/spec/ruby/core/dir/entries_spec.rb
+++ b/spec/ruby/core/dir/entries_spec.rb
@@ -47,7 +47,7 @@ describe "Dir.entries" do
encoding = Encoding.find("filesystem")
encoding = Encoding::BINARY if encoding == Encoding::US_ASCII
platform_is_not :windows do
- entries.should include("こんにちは.txt".force_encoding(encoding))
+ entries.should include("こんにちは.txt".dup.force_encoding(encoding))
end
entries.first.encoding.should equal(Encoding.find("filesystem"))
end