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-rw-r--r--test/openssl/test_engine.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/openssl/test_engine.rb b/test/openssl/test_engine.rb
index a7264d0eeb..3521de6396 100644
--- a/test/openssl/test_engine.rb
+++ b/test/openssl/test_engine.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
require_relative 'utils'
class OpenSSL::TestEngine < Test::Unit::TestCase