diff --git a/tool/ruby_vm/views/_mjit_compile_ivar.erb b/tool/ruby_vm/views/_mjit_compile_ivar.erb
index b3906df1867353..fc64e663693807 100644
--- a/tool/ruby_vm/views/_mjit_compile_ivar.erb
+++ b/tool/ruby_vm/views/_mjit_compile_ivar.erb
@@ -14,7 +14,7 @@
     MAYBE_UNUSED(<%= ope.fetch(:decl) %>) = (<%= ope.fetch(:type) %>)operands[<%= i %>];
 % end
 % # compiler: Use copied IVC to avoid race condition
-    IVC ic_copy = &(status->is_entries + ((union iseq_inline_storage_entry *)ic - body->is_entries))->cache;
+    IVC ic_copy = &(status->is_entries + ((union iseq_inline_storage_entry *)ic - body->is_entries))->iv_cache;
 %
 % # compiler: Consider cfp->self as T_OBJECT if ic_copy->ic_serial is set
     if (!status->compile_info->disable_ivar_cache && ic_copy->ic_serial) {
diff --git a/vm_core.h b/vm_core.h
index cdcc71b9961907..86f0b7d434f3af 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -239,6 +239,7 @@ union iseq_inline_storage_entry {
 	VALUE value;
     } once;
     struct iseq_inline_cache_entry cache;
+    struct iseq_inline_iv_cache_entry iv_cache;
 };
 
 struct rb_call_info_kw_arg {