diff --git a/www/common/drive-ui.js b/www/common/drive-ui.js
index d3c82a1a6..f287e545a 100644
--- a/www/common/drive-ui.js
+++ b/www/common/drive-ui.js
@@ -1757,7 +1757,7 @@ define([
                             var parsed = Hash.parsePadUrl(metadata.roHref);
                             // Forms: change "Open (read-only)" to "Open (as participant)"
                             if (parsed.type === "form") {
-                                if (parsed.hash.indexOf('auditor') !== -1) {
+                                if (parsed.hashData.auditorKey) {
                                     $('.cp-app-drive-context-openro .cp-text').text(Messages.fc_open_formaud);
                                 } else {
                                     $('.cp-app-drive-context-openro .cp-text').text(Messages.fc_open_formro);