From ddef42126b99fdd24a260f7505e77891437ed38a Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Mon, 19 May 2025 12:15:30 -0400
Subject: [PATCH] Fix old .NET

---
 SabreTools.Serialization/Serializers/XmlFile.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/SabreTools.Serialization/Serializers/XmlFile.cs b/SabreTools.Serialization/Serializers/XmlFile.cs
index 979e1df4..a6e58ee8 100644
--- a/SabreTools.Serialization/Serializers/XmlFile.cs
+++ b/SabreTools.Serialization/Serializers/XmlFile.cs
@@ -104,7 +104,9 @@ namespace SabreTools.Serialization.Serializers
                 Encoding = Encoding.UTF8,
                 Indent = true,
                 IndentChars = "\t",
+#if NET40_OR_GREATER || NETCOREAPP
                 NamespaceHandling = NamespaceHandling.OmitDuplicates,
+#endif
                 NewLineChars = "\n",
             };
             var stream = new MemoryStream();