diff --git a/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs b/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs
index 91e79c9670..f1ed53ea99 100644
--- a/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs
+++ b/src/Windows/Avalonia.Win32/Interop/UnmanagedMethods.cs
@@ -1878,7 +1878,10 @@ namespace Avalonia.Win32.Interop
 
         public static uint LGID(IntPtr HKL)
         {
-            return (uint)(HKL.ToInt32() & 0xffff);
+            unchecked
+            {
+                return (uint)((ulong)HKL & 0xffff);
+            }
         }
 
         public const int SORT_DEFAULT = 0;