diff --git a/assets/js/scripts.js b/assets/js/scripts.js
index ff0fa2f..d201928 100644
--- a/assets/js/scripts.js
+++ b/assets/js/scripts.js
@@ -668,13 +668,17 @@ require(['vs/editor/editor.main'], function () {
 
     // On preview
     let el_btn_preview = document.querySelector('#wpPreview');
-    el_btn_preview.addEventListener('click', event => {
-        el_stock_editor.value = window.monaco_editor.getValue();
-    });
+    if (el_btn_preview) {
+        el_btn_preview.addEventListener('click', event => {
+            el_stock_editor.value = window.monaco_editor.getValue();
+        });
+    }
 
     // On save
     let el_btn_save = document.querySelector('#wpSave');
-    el_btn_save.addEventListener('click', event => {
-        el_stock_editor.value = window.monaco_editor.getValue();
-    });
+    if (el_btn_save) {
+        el_btn_save.addEventListener('click', event => {
+            el_stock_editor.value = window.monaco_editor.getValue();
+        });
+    }
 });