diff --git a/CMNDAT/SaveData.cs b/CMNDAT/SaveData.cs
index 42dbf5f..58fe5b7 100644
--- a/CMNDAT/SaveData.cs
+++ b/CMNDAT/SaveData.cs
@@ -33,7 +33,7 @@ public bool Open(String filename)
 
 			try
 			{
-				Byte[] comp = tmp[HeaderLength..^0];
+				Byte[] comp = tmp[HeaderLength..];
 				using (var input = new MemoryStream(comp))
 				{
 					using (var zlib = new System.IO.Compression.ZLibStream(input, System.IO.Compression.CompressionMode.Decompress))
@@ -51,7 +51,7 @@ public bool Open(String filename)
 				return false;
 			}
 
-			mHeader = tmp[0..HeaderLength];
+			mHeader = tmp[..HeaderLength];
 			mFileName = filename;
 			return true;
 		}
diff --git a/SCSHDAT/SaveData.cs b/SCSHDAT/SaveData.cs
index 8b9c672..11add51 100644
--- a/SCSHDAT/SaveData.cs
+++ b/SCSHDAT/SaveData.cs
@@ -34,7 +34,7 @@ public bool Open(String filename)
 
 			try
 			{
-				Byte[] comp = tmp[HeaderLength..^0];
+				Byte[] comp = tmp[HeaderLength..];
 				using (var input = new MemoryStream(comp))
 				{
 					using (var zlib = new System.IO.Compression.ZLibStream(input, System.IO.Compression.CompressionMode.Decompress))
@@ -52,7 +52,7 @@ public bool Open(String filename)
 				return false;
 			}
 
-			mHeader = tmp[0..HeaderLength];
+			mHeader = tmp[..HeaderLength];
 			mFileName = filename;
 			return true;
 		}
diff --git a/STGDAT/SaveData.cs b/STGDAT/SaveData.cs
index 76272b3..cd3a7ca 100644
--- a/STGDAT/SaveData.cs
+++ b/STGDAT/SaveData.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Reflection.PortableExecutable;
 
 namespace STGDAT
 {
@@ -39,7 +40,7 @@ public bool Open(String filename)
 
 			try
 			{
-				Byte[] comp = tmp[HeaderLength..^0];
+				Byte[] comp = tmp[HeaderLength..];
 				mBuffer = Decomp(comp);
 			}
 			catch
@@ -47,6 +48,7 @@ public bool Open(String filename)
 				return false;
 			}
 
+			mHeader = tmp[..HeaderLength];
 			mFileName = filename;
 			return true;
 		}