1 files changed, 1 insertions, 1 deletions
diff --git a/vm.c b/vm.c
index 571942565f..5db91dd6ae 100644
--- a/vm.c
+++ b/vm.c
@@ -1446,7 +1446,7 @@ rb_thread_current_status(const rb_thread_t *th)
     }
     else if (cfp->me->def->original_id) {
 	str = rb_sprintf("`%s#%s' (cfunc)",
-			 RSTRING_PTR(rb_class_name(cfp->me->klass)),
+			 rb_class2name(cfp->me->klass),
 			 rb_id2name(cfp->me->def->original_id));
     }