diff --git a/SabreTools.Serialization.Writers/ArchiveDotOrg.cs b/SabreTools.Serialization.Writers/ArchiveDotOrg.cs
index 4ba2580f..b23709be 100644
--- a/SabreTools.Serialization.Writers/ArchiveDotOrg.cs
+++ b/SabreTools.Serialization.Writers/ArchiveDotOrg.cs
@@ -18,8 +18,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/Listxml.cs b/SabreTools.Serialization.Writers/Listxml.cs
index 19e2f1c5..2dfef2c8 100644
--- a/SabreTools.Serialization.Writers/Listxml.cs
+++ b/SabreTools.Serialization.Writers/Listxml.cs
@@ -18,8 +18,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/Logiqx.cs b/SabreTools.Serialization.Writers/Logiqx.cs
index 1eb0b887..7fc4030d 100644
--- a/SabreTools.Serialization.Writers/Logiqx.cs
+++ b/SabreTools.Serialization.Writers/Logiqx.cs
@@ -52,8 +52,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/M1.cs b/SabreTools.Serialization.Writers/M1.cs
index e312f8cf..0ebd55cf 100644
--- a/SabreTools.Serialization.Writers/M1.cs
+++ b/SabreTools.Serialization.Writers/M1.cs
@@ -18,8 +18,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/Mess.cs b/SabreTools.Serialization.Writers/Mess.cs
index c9015355..d37bfa3e 100644
--- a/SabreTools.Serialization.Writers/Mess.cs
+++ b/SabreTools.Serialization.Writers/Mess.cs
@@ -18,8 +18,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/OfflineList.cs b/SabreTools.Serialization.Writers/OfflineList.cs
index 8d52ccc5..05e9d9ad 100644
--- a/SabreTools.Serialization.Writers/OfflineList.cs
+++ b/SabreTools.Serialization.Writers/OfflineList.cs
@@ -18,8 +18,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/OpenMSX.cs b/SabreTools.Serialization.Writers/OpenMSX.cs
index 8740c8cf..b788ae11 100644
--- a/SabreTools.Serialization.Writers/OpenMSX.cs
+++ b/SabreTools.Serialization.Writers/OpenMSX.cs
@@ -42,8 +42,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();
diff --git a/SabreTools.Serialization.Writers/SoftwareList.cs b/SabreTools.Serialization.Writers/SoftwareList.cs
index 999ca9b4..64f202a0 100644
--- a/SabreTools.Serialization.Writers/SoftwareList.cs
+++ b/SabreTools.Serialization.Writers/SoftwareList.cs
@@ -42,8 +42,14 @@ namespace SabreTools.Serialization.Writers
 
             // Setup the writer and output
             var stream = new MemoryStream();
-            var writer = new XmlTextWriter(stream, Encoding.UTF8);
-            writer.Formatting = Formatting.Indented;
+            var writer = new XmlTextWriter(stream, Encoding.UTF8)
+            {
+                Formatting = Formatting.Indented,
+                IndentChar = '\t',
+                Indentation = 1
+            };
+            writer.Settings?.CheckCharacters = false;
+            writer.Settings?.NewLineChars = "\n";
 
             // Write document start
             writer.WriteStartDocument();