diff --git a/include/mruby/object.h b/include/mruby/object.h
index 151e36b96..e73ebe79a 100644
--- a/include/mruby/object.h
+++ b/include/mruby/object.h
@@ -6,7 +6,7 @@
   int color:3;\
   unsigned int flags:21;\
   struct RClass *c;\
-  struct RBasic *gcnext;
+  struct RBasic *gcnext
 
 
 /* white: 011, black: 100, gray: 000 */