diff --git a/UVtools.Core/FileFormats/AnetN4File.cs b/UVtools.Core/FileFormats/AnetN4File.cs
index 537429f..76904af 100644
--- a/UVtools.Core/FileFormats/AnetN4File.cs
+++ b/UVtools.Core/FileFormats/AnetN4File.cs
@@ -60,11 +60,11 @@ public sealed class AnetN4File : FileFormat
 
     public class Header
     {
-        [FieldOrder(0)][FieldEndianness(Endianness.Big)] public uint VersionLength { get; set; } = 2;
+        [FieldOrder(0)][FieldEndianness(Endianness.Big)] public int VersionLength { get; set; } = 2;
         [FieldOrder(1)][FieldEncoding("UTF-16BE")][FieldLength(nameof(VersionLength))] public string Version { get; set; } = "3";
-        [FieldOrder(2)][FieldEndianness(Endianness.Big)] public uint NameLength { get; set; } = (uint)About.SoftwareWithVersion.Length * 2;
+        [FieldOrder(2)][FieldEndianness(Endianness.Big)] public int NameLength { get; set; } = About.SoftwareWithVersion.Length * 2;
         [FieldOrder(3)][FieldEncoding("UTF-16BE")][FieldLength(nameof(NameLength))] public string Name { get; set; } = About.SoftwareWithVersion;
-        [FieldOrder(4)][FieldEndianness(Endianness.Big)] public uint DescriptionLength { get; set; } = (uint)About.SoftwareWithVersion.Length * 2;
+        [FieldOrder(4)][FieldEndianness(Endianness.Big)] public int DescriptionLength { get; set; } = About.SoftwareWithVersion.Length * 2;
         [FieldOrder(5)][FieldEncoding("UTF-16BE")][FieldLength(nameof(DescriptionLength))] public string Description { get; set; } = About.SoftwareWithVersion;
         [FieldOrder(6)][FieldEndianness(Endianness.Big)] public double XYPixelSize { get; set; } = 0.04725; // mm
         [FieldOrder(7)][FieldEndianness(Endianness.Big)] public double LayerHeight { get; set; } // mm; from 0.03 to 0.08
@@ -123,8 +123,8 @@ public sealed class AnetN4File : FileFormat
             WhitePixelsCount = layer.NonZeroPixelCount; // To be re-set latter while encoding
             XMin = layer.BoundingRectangle.X;
             YMin = layer.BoundingRectangle.Y;
-            XMax = layer.BoundingRectangle.Right;
-            YMax = layer.BoundingRectangle.Bottom;
+            XMax = layer.BoundingRectangle.Right - 1;
+            YMax = layer.BoundingRectangle.Bottom - 1;
         }
 
         public override string ToString()