diff --git a/src/MaaWpfGui/Res/Localizations/en-us.xaml b/src/MaaWpfGui/Res/Localizations/en-us.xaml
index 6393afc8b5..01adb25ca4 100644
--- a/src/MaaWpfGui/Res/Localizations/en-us.xaml
+++ b/src/MaaWpfGui/Res/Localizations/en-us.xaml
@@ -350,7 +350,7 @@ Please do not check it when the stage OF-1 is not unlocked.</system:String>
     <system:String x:Key="UseAlternateStage">Use alternative stage</system:String>
     <system:String x:Key="UseRemainingSanityStage">Use remaining sanity stage</system:String>
     <system:String x:Key="UseRemainingSanityStageTip">Brush the specified stage after completing the main task, won't use sanity potion or stone</system:String>
-    <system:String x:Key="UseExpiringMedicine">Unlimited use of expiring (<48h) sanity potion</system:String>
+    <system:String x:Key="UseExpiringMedicine">Unlimited use of expiring (&lt;48h) sanity potion</system:String>
     <system:String x:Key="HideUnavailableStage">Hide today's not open stages</system:String>
     <system:String x:Key="HideSeries">Hide series</system:String>
     <system:String x:Key="CustomInfrastPlanShowInFightSettings">Show Base Plan</system:String>