diff --git a/src/app/shared/item/item-versions/item-versions.component.ts b/src/app/shared/item/item-versions/item-versions.component.ts
index 0d90f9ffee..752cd55b5b 100644
--- a/src/app/shared/item/item-versions/item-versions.component.ts
+++ b/src/app/shared/item/item-versions/item-versions.component.ts
@@ -2,7 +2,7 @@ import { Component, Input, OnInit } from '@angular/core';
 import { Item } from '../../../core/shared/item.model';
 import { Version } from '../../../core/shared/version.model';
 import { RemoteData } from '../../../core/data/remote-data';
-import { combineLatest as observableCombineLatest, Observable } from 'rxjs';
+import { BehaviorSubject, combineLatest as observableCombineLatest, Observable } from 'rxjs';
 import { VersionHistory } from '../../../core/shared/version-history.model';
 import {
   getAllSucceededRemoteData,