diff --git a/PowerControl/MenuStack.cs b/PowerControl/MenuStack.cs
index c8c0639..98c099b 100644
--- a/PowerControl/MenuStack.cs
+++ b/PowerControl/MenuStack.cs
@@ -43,7 +43,7 @@ namespace PowerControl
 
         private static bool Is24hClock
         {
-            get => DateTimeFormatInfo.CurrentInfo.ShortTimePattern.Contains("HH");
+            get => DateTimeFormatInfo.CurrentInfo.ShortTimePattern.Contains('H');
         }
     }
 }