diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0cd0c883..7addc5a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 ## Added
 - advanced access rights for talk files and share links
+- reference data from coediting
 
 ## 7.9.4
 ## Changed
diff --git a/controller/editorcontroller.php b/controller/editorcontroller.php
index bb70f8ca..27e49c15 100644
--- a/controller/editorcontroller.php
+++ b/controller/editorcontroller.php
@@ -602,10 +602,12 @@ public function reference($referenceData, $path = null) {
 
         $fileName = $file->getName();
         $ext = strtolower(pathinfo($fileName, PATHINFO_EXTENSION));
+        $key = $this->fileUtility->getKey($file);
 
         $response = [
             "fileType" => $ext,
             "path" => $userFolder->getRelativePath($file->getPath()),
+            "key" => $key,
             "referenceData" => [
                 "fileKey" => $file->getId(),
                 "instanceId" => $this->config->getSystemValue("instanceid", true),