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-rw-r--r--t/t0301.ru5
1 files changed, 3 insertions, 2 deletions
diff --git a/t/t0301.ru b/t/t0301.ru
index 1ae8ea7..54929b1 100644
--- a/t/t0301.ru
+++ b/t/t0301.ru
@@ -1,4 +1,5 @@
 #\-N --debug
+# frozen_string_literal: false
 run(lambda do |env|
   case env['PATH_INFO']
   when '/vars'
@@ -6,8 +7,8 @@ run(lambda do |env|
         "lint=#{caller.grep(%r{rack/lint\.rb})[0].split(':')[0]}\n"
   end
   h = {
-    'Content-Length' => b.size.to_s,
-    'Content-Type' => 'text/plain',
+    'content-length' => b.size.to_s,
+    'content-type' => 'text/plain',
   }
   [ 200, h, [ b ] ]
 end)