1 files changed, 1 insertions, 1 deletions
diff --git a/py/obj.h b/py/obj.h
index 1b1f824140..0f6179630c 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -46,7 +46,7 @@ typedef machine_const_ptr_t mp_const_obj_t;
 
 struct _mp_obj_type_t;
 struct _mp_obj_base_t {
-    const struct _mp_obj_type_t *type;
+    const struct _mp_obj_type_t *type MICROPY_OBJ_BASE_ALIGNMENT;
 };
 typedef struct _mp_obj_base_t mp_obj_base_t;