1 files changed, 1 insertions, 1 deletions
diff --git a/src/variable.c b/src/variable.c
index de56c3ce6..3dc562a5e 100644
--- a/src/variable.c
+++ b/src/variable.c
@@ -595,7 +595,7 @@ mrb_obj_iv_inspect(mrb_state *mrb, struct RObject *obj)
     mrb_value str = mrb_str_buf_new(mrb, 30);
 
     mrb_str_buf_cat(mrb, str, "-<", 2);
-    mrb_str_cat2(mrb, str, cn);
+    mrb_str_cat_cstr(mrb, str, cn);
     mrb_str_cat(mrb, str, ":", 1);
     mrb_str_concat(mrb, str, mrb_ptr_to_str(mrb, obj));