diff --git a/pages/index.tsx b/pages/index.tsx
index 4de003f..1c2640d 100644
--- a/pages/index.tsx
+++ b/pages/index.tsx
@@ -73,7 +73,7 @@ export default function Main() {
 
   const setNoteValue: ChangeEventHandler<HTMLInputElement> = (e) => {
     setNote(e.target.value);
-    const frequency = calculateFrequency(root, note);
+    const frequency = calculateFrequency(root, e.target.value);
     if (frequency != null) setFrequency(frequency.toFixed(3));
   };