diff --git a/public/redirect.js b/public/redirect.js
index 9ce49fa..9645e25 100644
--- a/public/redirect.js
+++ b/public/redirect.js
@@ -24,7 +24,7 @@
   if (isMobilePhone && width < 768) {
     // Mobile phones: detected mobile device < 768px
     targetPage = 'mobile.html'
-  } else if (width < 500) {
+  } else if (width < 400) {
     // Small screens: force mobile
     targetPage = 'mobile.html'
   } else if (isTabletDevice || (width >= 500 && width < 1200)) {