1 files changed, 1 insertions, 1 deletions
diff --git a/mrbgems/mruby-class-ext/src/class.c b/mrbgems/mruby-class-ext/src/class.c
index 39c16fc48..290ddf4b3 100644
--- a/mrbgems/mruby-class-ext/src/class.c
+++ b/mrbgems/mruby-class-ext/src/class.c
@@ -49,7 +49,7 @@ mrb_mod_module_exec(mrb_state *mrb, mrb_value self)
   mrb_get_args(mrb, "*&!", &argv, &argc, &blk);
 
   c = mrb_class_ptr(self);
-  if (mrb->c->ci->acc < 0) {
+  if (mrb->c->ci->cci > 0) {
     return mrb_yield_with_class(mrb, blk, argc, argv, self, c);
   }
   mrb_vm_ci_target_class_set(mrb->c->ci, c);