diff --git a/frontend/src/view-file-collabora-online.js b/frontend/src/view-file-collabora-online.js
index f9db8ca204..429e2b4c0f 100644
--- a/frontend/src/view-file-collabora-online.js
+++ b/frontend/src/view-file-collabora-online.js
@@ -35,7 +35,7 @@ class FileContent extends React.Component {
 
     return (
       <div className="file-view-content flex-1 p-0 border-0">
-        <iframe title={fileName} id="office-frame" name="office_frame" className="d-none" allowFullScreen></iframe>
+        <iframe title={fileName} id="office-frame" name="office_frame" className="d-none" allowFullScreen allow="clipboard-read *; clipboard-write *"></iframe>
         <form id="office-form" name="office_form" target="office_frame" action={actionURL} method="post">
           <input name="access_token" value={accessToken} type="hidden" />
           <input name="access_token_ttl" value={accessTokenTtl} type="hidden" />
diff --git a/seahub/templates/view_file_wopi.html b/seahub/templates/view_file_wopi.html
index 08e09bfd5d..14a10da961 100644
--- a/seahub/templates/view_file_wopi.html
+++ b/seahub/templates/view_file_wopi.html
@@ -36,7 +36,7 @@
     <input name="access_token_ttl" value="{{access_token_ttl}}" type="hidden"/>
 </form>
 
-<iframe id="office_frame" name="office_frame" class="hide" allowfullscreen ></iframe>
+<iframe id="office_frame" name="office_frame" class="hide" allowfullscreen allow="clipboard-read *; clipboard-write *"></iframe>
 
 <script type="text/javascript" src="{% static "scripts/lib/jquery.min.js" %}"></script>
 <script type="text/javascript" src="{{ MEDIA_URL }}js/base.js?t=1536127546642"></script>