diff --git a/benchmark/mjit_exivar.yml b/benchmark/mjit_exivar.yml
index 052ca46ff9..e6fbae96de 100644
--- a/benchmark/mjit_exivar.yml
+++ b/benchmark/mjit_exivar.yml
@@ -1,5 +1,4 @@
 prelude: |
-  # frozen_string_literal: true
   class Bench < Hash
     def initialize
       @exivar = nil