diff --git a/web/src/components/Settings/SettingsDialog.jsx b/web/src/components/Settings/SettingsDialog.jsx
index 6749602..11b1faf 100644
--- a/web/src/components/Settings/SettingsDialog.jsx
+++ b/web/src/components/Settings/SettingsDialog.jsx
@@ -70,7 +70,7 @@ export default function SettingsDialog({ handleClose }) {
   const { CacheSize, ReaderReadAHead, PreloadCache } = settings || {}
 
   useEffect(() => {
-    if (!CacheSize || !ReaderReadAHead) return
+    if (isNaN(CacheSize) || isNaN(ReaderReadAHead) || isNaN(PreloadCache)) return
 
     setCacheSize(CacheSize)
     setCachePercentage(ReaderReadAHead)