diff --git a/benchmark/bm_vm3_gc.rb b/benchmark/bm_vm3_gc.rb
old mode 100755
new mode 100644
index 7db9829d44..e668026915
--- a/benchmark/bm_vm3_gc.rb
+++ b/benchmark/bm_vm3_gc.rb
@@ -1,4 +1,3 @@
-#! /usr/bin/ruby
 5000.times do
   100.times do
     {"xxxx"=>"yyyy"}