diff --git a/web/app.js b/web/app.js
index bd4ed2f..bf689bc 100644
--- a/web/app.js
+++ b/web/app.js
@@ -183,8 +183,10 @@ function reloadDnsmasq() {
 // ---------------------------------------------------------------------------
 
 function showEditForm(cell) {
-  cell.querySelector('.edit-btn').style.display = 'none';
-  cell.querySelector('.pin-needs-name').style.display = 'none';
+  var editBtn = cell.querySelector('.edit-btn');
+  var pinBtn = cell.querySelector('.pin-needs-name');
+  if (editBtn) editBtn.style.display = 'none';
+  if (pinBtn) pinBtn.style.display = 'none';
   cell.querySelector('.edit-form').style.display = 'inline-flex';
   var input = cell.querySelector('.edit-hostname');
   input.focus();