diff --git a/src/utils/PermanentUserData.js b/src/utils/PermanentUserData.js
index c753a8ce..4504e593 100644
--- a/src/utils/PermanentUserData.js
+++ b/src/utils/PermanentUserData.js
@@ -5,7 +5,6 @@ import {
   readDeleteSet,
   writeDeleteSet,
   createDeleteSet,
-  applyUpdate,
   ID, DeleteSet, YArrayEvent, Transaction, Doc // eslint-disable-line
 } from '../internals.js'