diff --git a/javascripts/theme.js b/javascripts/theme.js
index 29cb5da..a6347b0 100644
--- a/javascripts/theme.js
+++ b/javascripts/theme.js
@@ -129,7 +129,7 @@ function alter_new_issue_page() {
 }
 
 function alter_issue_show_page() {
-  if ($('#attachments_fields').length) {
+  if ($('.attachments_fields').length) {
     var observer = new MutationObserver(function(mutations) {
       mutations.forEach(function(mutation) {
         $('input.filename.readonly').each(function(idx, elem) {
@@ -150,7 +150,7 @@ function alter_issue_show_page() {
         });
       });
     });
-    var target = $('#attachments_fields')[0];
+    var target = $('.attachments_fields')[0];
     observer.observe(target, {attributes: false, childList: true, characterData: false});
   }
   $('textarea#issue_notes').on('keyup change', function() {