1 files changed, 1 insertions, 1 deletions

diff --git a/src/gc.c b/src/gc.c
index 0b01164d5..e0a923b89 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -77,7 +77,7 @@
 #endif
 
 struct free_obj {
-  MRUBY_OBJECT_HEADER;
+  MRB_OBJECT_HEADER;
   struct RBasic *next;
 };