1 files changed, 1 insertions, 1 deletions
diff --git a/insns.def b/insns.def
index 82fa0313f0..a300189e1d 100644
--- a/insns.def
+++ b/insns.def
@@ -1,4 +1,4 @@
-/** ##skip -*- mode:c; style:ruby -*-
+/** ##skip -*- mode:c; style:ruby; coding: shift_jis -*-
   insns.def - YARV instruction definitions
 
   $Author: $