diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c
index e2f1450..85b8e1c 100644
--- a/block/bfq-cgroup.c
+++ b/block/bfq-cgroup.c
@@ -666,6 +666,12 @@
 		bfq_put_idle_entity(bfq_entity_service_tree(entity), entity);
 	bfqg_and_blkg_put(bfqq_group(bfqq));
 
+	if (entity->parent &&
+	    entity->parent->last_bfqq_created == bfqq)
+		entity->parent->last_bfqq_created = NULL;
+	else if (bfqd->last_bfqq_created == bfqq)
+		bfqd->last_bfqq_created = NULL;
+
 	entity->parent = bfqg->my_entity;
 	entity->sched_data = &bfqg->sched_data;
 	/* pin down bfqg and its associated blkg  */