1 files changed, 1 insertions, 1 deletions
diff --git a/include/mruby/irep.h b/include/mruby/irep.h
index 64a38227c..ede6780e6 100644
--- a/include/mruby/irep.h
+++ b/include/mruby/irep.h
@@ -32,7 +32,7 @@ typedef struct mrb_pool_value {
   union {
     const char *str;
     int32_t i32;
-#ifdef MRB_INT64
+#ifdef MRB_64BIT
     int64_t i64;
 #endif
     mrb_float f;