diff --git a/lib/Controller/WopiController.php b/lib/Controller/WopiController.php
index 1a768f938b..ea5d44c59d 100644
--- a/lib/Controller/WopiController.php
+++ b/lib/Controller/WopiController.php
@@ -282,7 +282,10 @@ public function checkFileInfo($fileId, $access_token) {
 		}
 
 		if ($isPublic) {
-			$response['UserExtraInfo']['is_guest'] = true;
+			$response['UserExtraInfo']['is_guest'] = true; // DEPRECATED
+			$response['IsAnonymousUser'] = true;
+		} else {
+			$response['IsAnonymousUser'] = false;
 		}
 
 		if ($wopi->isRemoteToken()) {