diff --git a/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter38.cs b/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter38.cs
index 7db42cb..01c018e 100644
--- a/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter38.cs
+++ b/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter38.cs
@@ -51,6 +51,17 @@ namespace SpineViewer.Spine.Implementations.SkeletonConverter
             [RotateMode.ChainScale] = "chainScale",
         };
 
+        private static readonly Dictionary<AttachmentType, string> AttachmentTypeJsonValue = new()
+        {
+            [AttachmentType.Region] = "region",
+            [AttachmentType.Boundingbox] = "bounding",
+            [AttachmentType.Mesh] = "mesh",
+            [AttachmentType.Linkedmesh] = "linkedmesh",
+            [AttachmentType.Path] = "path",
+            [AttachmentType.Point] = "point",
+            [AttachmentType.Clipping] = "clipping",
+        };
+
         private BinaryReader reader = null;
         private JsonObject root = null;
         private bool nonessential = false;
@@ -298,7 +309,7 @@ namespace SpineViewer.Spine.Implementations.SkeletonConverter
             var name = reader.ReadStringRef() ?? keyName;
             var type = (AttachmentType)reader.ReadByte();
             attachment["name"] = name;
-            attachment["type"] = type.ToString();
+            attachment["type"] = AttachmentTypeJsonValue[type];
             switch (type)
             {
                 case AttachmentType.Region:
diff --git a/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter41.cs b/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter41.cs
index bf25958..c08316a 100644
--- a/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter41.cs
+++ b/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter41.cs
@@ -52,9 +52,9 @@ namespace SpineViewer.Spine.Implementations.SkeletonConverter
         private static readonly Dictionary<AttachmentType, string> AttachmentTypeJsonValue = new()
         {
             [AttachmentType.Region] = "region",
-            [AttachmentType.Boundingbox] = "boundingBox",
+            [AttachmentType.Boundingbox] = "boundingbox",
             [AttachmentType.Mesh] = "mesh",
-            [AttachmentType.Linkedmesh] = "linkedMesh",
+            [AttachmentType.Linkedmesh] = "linkedmesh",
             [AttachmentType.Path] = "path",
             [AttachmentType.Point] = "point",
             [AttachmentType.Clipping] = "clipping",
diff --git a/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter42.cs b/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter42.cs
index 47aa5d0..891bf31 100644
--- a/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter42.cs
+++ b/SpineViewer/Spine/Implementations/SkeletonConverter/SkeletonConverter42.cs
@@ -52,7 +52,7 @@ namespace SpineViewer.Spine.Implementations.SkeletonConverter
             [AttachmentType.Region] = "region",
             [AttachmentType.Boundingbox] = "bounding",
             [AttachmentType.Mesh] = "mesh",
-            [AttachmentType.Linkedmesh] = "linkedMesh",
+            [AttachmentType.Linkedmesh] = "linkedmesh",
             [AttachmentType.Path] = "path",
             [AttachmentType.Point] = "point",
             [AttachmentType.Clipping] = "clipping",