remove RuntimeError from mrb_state

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gc.c b/src/gc.c
index c07c9b13b..a7537a015 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -277,7 +277,7 @@ gc_protect(mrb_state *mrb, struct RBasic *p)
   if (mrb->arena_idx > MRB_ARENA_SIZE) {
     /* arena overflow error */
     mrb->arena_idx = MRB_ARENA_SIZE - 4; /* force room in arena */
-    mrb_raise(mrb, mrb->eRuntimeError_class, "arena overflow error");
+    mrb_raise(mrb, E_RUNTIME_ERROR, "arena overflow error");
   }
   mrb->arena[mrb->arena_idx++] = p;
 }