diff --git a/app/react/components/dom/slot.jsx b/app/react/components/dom/slot.jsx
index 37abe28..535ddb1 100644
--- a/app/react/components/dom/slot.jsx
+++ b/app/react/components/dom/slot.jsx
@@ -36,7 +36,7 @@ export default function Slot({
         {qty > 1 && (
           <span
             className={
-              [styles.qty, `q-${Math.round(Math.log10(qty))}`]
+              [styles.qty, `q-${Math.floor(Math.log10(qty))}`]
                 .filter(Boolean).join(' ')
             }
           >