diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index 41d5ce25fd4..f35859fd3c1 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -2265,6 +2265,11 @@ public:
   void sort(Item_field_cmpfunc compare, void *arg);
   void fix_length_and_dec();
   bool fix_fields(THD *thd, Item **ref);
+  void cleanup()
+  {
+    delete eval_item;
+    eval_item= NULL;
+  }
   void update_used_tables();
   COND *build_equal_items(THD *thd, COND_EQUAL *inherited,
                           bool link_item_fields,