diff --git a/js/documents.js b/js/documents.js
index 7beebee4..3c44b34b 100644
--- a/js/documents.js
+++ b/js/documents.js
@@ -119,7 +119,7 @@ var documentsMain = {
 			}
 
 			// WOPISrc - URL that loolwsd will access (ie. pointing to ownCloud)
-			var wopiurl = window.location.protocol + '//' + window.location.host + OC.generateUrl('apps/richdocuments/wopi/files/{file_id}', {file_id: fileId});
+			var wopiurl = window.location.protocol + '//' + window.location.host + OC.generateUrl('apps/richdocuments/wopi/files/{file_id}_{instanceId}', {file_id: fileId, instanceId: instanceId});
 			var wopisrc = encodeURIComponent(wopiurl);
 
 			// urlsrc - the URL from discovery xml that we access for the particular
diff --git a/lib/Controller/DocumentController.php b/lib/Controller/DocumentController.php
index d8df677a..731f10bc 100644
--- a/lib/Controller/DocumentController.php
+++ b/lib/Controller/DocumentController.php
@@ -108,6 +108,7 @@ class DocumentController extends Controller {
 				'token' => $token,
 				'urlsrc' => $urlSrc,
 				'path' => '/',
+				'instanceId' => $this->settings->getSystemValue('instanceid'),
 			];
 
 			$response = new TemplateResponse('richdocuments', 'documents', $params, 'empty');
@@ -157,6 +158,7 @@ class DocumentController extends Controller {
 					'token' => $token,
 					'urlsrc' => $urlSrc,
 					'path' => '/',
+					'instanceId' => $this->settings->getSystemValue('instanceid'),
 				];
 
 				$response = new TemplateResponse('richdocuments', 'documents', $params, 'empty');
diff --git a/templates/documents.php b/templates/documents.php
index 41e114e0..6d5dc79a 100644
--- a/templates/documents.php
+++ b/templates/documents.php
@@ -5,6 +5,7 @@
 	var richdocuments_token = '<?php p($_['token']) ?>';
 	var richdocuments_urlsrc = '<?php p($_['urlsrc']) ?>';
 	var richdocuments_path = '<?php p($_['path']) ?>';
+	var instanceId = '<?php p($_['instanceId']) ?>';
 </script>
 
 <?php