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-rw-r--r--test/builder/end.ru4
1 files changed, 3 insertions, 1 deletions
diff --git a/test/builder/end.ru b/test/builder/end.ru
index 7f36d8cb..dd8d45a9 100644
--- a/test/builder/end.ru
+++ b/test/builder/end.ru
@@ -1,4 +1,6 @@
-run lambda { |env| [200, {'Content-Type' => 'text/plain'}, ['OK']] }
+# frozen_string_literal: true
+
+run lambda { |env| [200, { 'Content-Type' => 'text/plain' }, ['OK']] }
 __END__
 Should not be evaluated
 Neither should