diff --git a/simple-mind-map/src/plugins/Formula.js b/simple-mind-map/src/plugins/Formula.js
index 4204224f..59f15450 100644
--- a/simple-mind-map/src/plugins/Formula.js
+++ b/simple-mind-map/src/plugins/Formula.js
@@ -113,11 +113,7 @@ class Formula {
       for (const el of els)
         nodeText = nodeText.replace(
           el.outerHTML,
-          `\$${el
-            .getAttribute('data-value')
-            .replaceAll('&', '&')
-            .replaceAll('<', '&lt;')
-            .replaceAll('>', '&gt;')}\$`
+          `$${el.getAttribute('data-value')}$`
         )
     }
     return nodeText