diff --git a/storage/innobase/buf/buf0flu.cc b/storage/innobase/buf/buf0flu.cc
index 0ebc91a..b82e0f3 100644
--- a/storage/innobase/buf/buf0flu.cc
+++ b/storage/innobase/buf/buf0flu.cc
@@ -3477,6 +3477,10 @@ DECLARE_THREAD(buf_flush_page_cleaner_worker)(
 {
 	my_thread_init();
 
+#ifdef UNIV_PFS_THREAD
+	pfs_register_thread(page_cleaner_thread_key);
+#endif /* UNIV_PFS_THREAD */
+
 	mutex_enter(&page_cleaner->mutex);
 	page_cleaner->n_workers++;
 	mutex_exit(&page_cleaner->mutex);