diff --git a/src/core/lv_obj_class.c b/src/core/lv_obj_class.c
index 88c47543a..54497f02e 100644
--- a/src/core/lv_obj_class.c
+++ b/src/core/lv_obj_class.c
@@ -12,7 +12,6 @@
 /*********************
  *      DEFINES
  *********************/
-#define MY_CLASS &lv_obj_class
 
 /**********************
  *      TYPEDEFS
diff --git a/src/widgets/lv_btn.c b/src/widgets/lv_btn.c
index 2ac7c2b29..914b5f1ed 100644
--- a/src/widgets/lv_btn.c
+++ b/src/widgets/lv_btn.c
@@ -15,7 +15,6 @@
 /*********************
  *      DEFINES
  *********************/
-#define MY_CLASS &lv_btn_class
 
 /**********************
  *      TYPEDEFS