1 files changed, 2 insertions, 2 deletions
diff --git a/src/vm.c b/src/vm.c
index 320282742..da8c62f51 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -564,8 +564,8 @@ localjump_error(mrb_state *mrb, localjump_error_kind kind)
   mrb_value exc;
 
   msg = mrb_str_buf_new(mrb, sizeof(lead) + 7);
-  mrb_str_buf_cat(mrb, msg, lead, sizeof(lead) - 1);
-  mrb_str_buf_cat(mrb, msg, kind_str[kind], kind_str_len[kind]);
+  mrb_str_cat(mrb, msg, lead, sizeof(lead) - 1);
+  mrb_str_cat(mrb, msg, kind_str[kind], kind_str_len[kind]);
   exc = mrb_exc_new_str(mrb, E_LOCALJUMP_ERROR, msg);
   mrb->exc = mrb_obj_ptr(exc);
 }