diff --git a/app/assets/javascripts/highlightTags.js b/app/assets/javascripts/highlightTags.js
index 2a6d7c34d..472d479c7 100644
--- a/app/assets/javascripts/highlightTags.js
+++ b/app/assets/javascripts/highlightTags.js
@@ -1,6 +1,10 @@
 (function(Modules) {
   "use strict";
 
+  if (
+    !('oninput' in document.createElement('input'))
+  ) return;
+
   const tagPattern = /\(\([^\)\(]+\)\)/g;
 
   Modules.HighlightTags = function() {