diff --git a/src/structs/Item.js b/src/structs/Item.js
index 702c814e..c3859be1 100644
--- a/src/structs/Item.js
+++ b/src/structs/Item.js
@@ -739,6 +739,7 @@ export class ItemRef extends AbstractStructRef {
       this.id.clock += offset
       this.left = createID(this.id.client, this.id.clock - 1)
       this.content = this.content.splice(offset)
+      this.length -= offset
     }
 
     const left = this.left === null ? null : getItemCleanEnd(transaction, store, this.left)