diff --git a/src/script/optimizer.js b/src/script/optimizer.js
index fda8b8a..3245fcf 100644
--- a/src/script/optimizer.js
+++ b/src/script/optimizer.js
@@ -51,7 +51,7 @@ async function update() {
     let desired = [...document.getElementsByName("desired-stat")].map(
         elem => {
             elem.value = Math.min(Math.max(elem.value, 0), 99) || null;
-            return parseInt(elem.value);
+            return parseInt(elem.value) || 0;
         }
     )