diff --git a/tool/ruby_vm/views/_insn_type_chars.erb b/tool/ruby_vm/views/_insn_type_chars.erb
index a9c112d369..e2ef222548 100644
--- a/tool/ruby_vm/views/_insn_type_chars.erb
+++ b/tool/ruby_vm/views/_insn_type_chars.erb
@@ -12,18 +12,20 @@ enum ruby_insn_type_chars {
 % end
 };
 
-static inline union iseq_inline_storage_entry * ISEQ_IS_ENTRY_START(const struct rb_iseq_constant_body *body, char op_type) {
+static inline union iseq_inline_storage_entry *
+ISEQ_IS_ENTRY_START(const struct rb_iseq_constant_body *body, char op_type)
+{
     unsigned int relative_ic_offset = 0;
-    switch(op_type) {
+    switch (op_type) {
       case TS_IC:
-          relative_ic_offset += body->ise_size;
+        relative_ic_offset += body->ise_size;
       case TS_ISE:
-          relative_ic_offset += body->ivc_size;
+        relative_ic_offset += body->ivc_size;
       case TS_IVC:
       case TS_ICVARC:
-          break;
+        break;
       default:
-          rb_bug("Wrong op type");
+        rb_bug("Wrong op type");
     }
     return &body->is_entries[relative_ic_offset];
 }