diff --git a/src/core/lv_obj_class.c b/src/core/lv_obj_class.c
index 23680273d1..e8cb6e6586 100644
--- a/src/core/lv_obj_class.c
+++ b/src/core/lv_obj_class.c
@@ -12,6 +12,7 @@
 /*********************
  *      DEFINES
  *********************/
+#define MY_CLASS &lv_obj_class
 
 /**********************
  *      TYPEDEFS