diff --git a/PCK-Studio/Controls/PckEditor.cs b/PCK-Studio/Controls/PckEditor.cs
index 8f4652a2..d599b360 100644
--- a/PCK-Studio/Controls/PckEditor.cs
+++ b/PCK-Studio/Controls/PckEditor.cs
@@ -138,6 +138,11 @@ namespace PckStudio.Controls
             };
         }
 
+        protected override void PreSave()
+        {
+            EditorValue.Endianness = LittleEndianCheckBox.Checked ? OMI.ByteOrder.LittleEndian : OMI.ByteOrder.BigEndian;
+        }
+
         protected override void PostSave()
         {
             _timesSaved++;
diff --git a/PckStudio.Core/PackInfo.cs b/PckStudio.Core/PackInfo.cs
index df451b8c..8a2baa76 100644
--- a/PckStudio.Core/PackInfo.cs
+++ b/PckStudio.Core/PackInfo.cs
@@ -8,7 +8,7 @@ namespace PckStudio.Core
         public static readonly PackInfo Empty = new PackInfo(default, default, default);
         public bool IsValid { get; }
         public PckFile File { get; }
-        public OMI.ByteOrder Endianness { get; }
+        public OMI.ByteOrder Endianness;
 
         
         //public enum PackType