diff --git a/frontend/app.js b/frontend/app.js
index fb80f42..8593e1e 100644
--- a/frontend/app.js
+++ b/frontend/app.js
@@ -1733,6 +1733,7 @@ function noteApp() {
             return str
                 .replace(/&/g, '&')
                 .replace(/"/g, '"')
+                .replace(/'/g, ''')
                 .replace(/</g, '&lt;')
                 .replace(/>/g, '&gt;');
         },