Fix build on c++ compiler

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gc.c b/src/gc.c
index 374072ce5..3ee5da1f8 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -325,7 +325,7 @@ struct RBasic*
 mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
 {
   struct RBasic *p;
-  static const RVALUE RVALUE_zero = { { { 0 } } };
+  static const RVALUE RVALUE_zero = { { { MRB_TT_FALSE } } };
 
 #ifdef MRB_GC_STRESS
   mrb_garbage_collect(mrb);