diff --git a/SabreTools.Serialization/Models/Xbox/Constants.cs b/SabreTools.Serialization/Models/Xbox/Constants.cs
index 542a8067..32f2b099 100644
--- a/SabreTools.Serialization/Models/Xbox/Constants.cs
+++ b/SabreTools.Serialization/Models/Xbox/Constants.cs
@@ -2,9 +2,9 @@ using System.Collections.Generic;
 
 namespace SabreTools.Data.Models.Xbox
 {
-    /// <see href="https://xboxdevwiki.net/Xbe"/> 
-    /// <see href="http://wiki.redump.org/index.php?title=Xbox_Title_IDs"/> 
-    /// <see href="https://dbox.tools/publishers/"/> 
+    /// <see href="https://xboxdevwiki.net/Xbe"/>
+    /// <see href="http://wiki.redump.org/index.php?title=Xbox_Title_IDs"/>
+    /// <see href="https://dbox.tools/publishers/"/>
     public static class Constants
     {
         /// <summary>
@@ -129,7 +129,7 @@ namespace SabreTools.Data.Models.Xbox
 
             { "PC", "Playlogic Entertainment" },
             { "PL", "Phantagram Co., Ltd. / Playlogic Entertainment" }, // TODO: Confirm
-            
+
             { "RA", "Rage" },
 
             { "SA", "Sammy" },
@@ -183,7 +183,7 @@ namespace SabreTools.Data.Models.Xbox
             { "" + (char)0xFF + (char)0xFE, "Microsoft Downloadable Content" },
             { "" + (char)0xFF + (char)0xFF, "Microsoft Downloadable Content" },
         };
-    
+
         /// <summary>
         /// Mapping of all region 1-letter codes to long names
         /// </summary>
@@ -198,4 +198,4 @@ namespace SabreTools.Data.Models.Xbox
             { 'W', "World" },
         };
     }
-}
\ No newline at end of file
+}
diff --git a/SabreTools.Serialization/Models/Xbox/XMID.cs b/SabreTools.Serialization/Models/Xbox/XMID.cs
index 9df4f0f5..c3241e9b 100644
--- a/SabreTools.Serialization/Models/Xbox/XMID.cs
+++ b/SabreTools.Serialization/Models/Xbox/XMID.cs
@@ -17,17 +17,17 @@ namespace SabreTools.Data.Models.Xbox
         /// <summary>
         /// 2-character publisher identifier
         /// </summary>
-        public string? PublisherIdentifier { get; set; }
+        public string PublisherIdentifier { get; set; }
 
         /// <summary>
         /// 3-character Game ID
         /// </summary>
-        public string? GameID { get; set; }
+        public string GameID { get; set; }
 
         /// <summary>
         /// 2-character Internal version number
         /// </summary>
-        public string? VersionNumber { get; set; }
+        public string VersionNumber { get; set; }
 
         /// <summary>
         /// 1-character Region identifier character
diff --git a/SabreTools.Serialization/Models/Xbox/XeMID.cs b/SabreTools.Serialization/Models/Xbox/XeMID.cs
index d43d6678..3c23157a 100644
--- a/SabreTools.Serialization/Models/Xbox/XeMID.cs
+++ b/SabreTools.Serialization/Models/Xbox/XeMID.cs
@@ -22,7 +22,7 @@ namespace SabreTools.Data.Models.Xbox
         /// <summary>
         /// 2-character publisher identifier
         /// </summary>
-        public string? PublisherIdentifier { get; set; }
+        public string PublisherIdentifier { get; set; }
 
         /// <summary>
         /// 1-character Platform disc is made for, 2 indicates Xbox 360
@@ -32,12 +32,12 @@ namespace SabreTools.Data.Models.Xbox
         /// <summary>
         /// 3-character Game ID
         /// </summary>
-        public string? GameID { get; set; }
+        public string GameID { get; set; }
 
         /// <summary>
         /// 2-character Title-specific SKU
         /// </summary>
-        public string? SKU { get; set; }
+        public string SKU { get; set; }
 
         /// <summary>
         /// 1-character Region identifier character
@@ -47,7 +47,7 @@ namespace SabreTools.Data.Models.Xbox
         /// <summary>
         /// 2-character Base version of executables, usually starts at 01
         /// </summary>
-        public string? BaseVersion { get; set; }
+        public string BaseVersion { get; set; }
 
         /// <summary>
         /// 1-character Media subtype identifier
@@ -57,11 +57,11 @@ namespace SabreTools.Data.Models.Xbox
         /// <summary>
         /// 2-character Disc number stored in [disc number][total discs] format
         /// </summary>
-        public string? DiscNumberIdentifier { get; set; }
+        public string DiscNumberIdentifier { get; set; }
 
         /// <summary>
         /// 8-hex-digit certification submission identifier; usually on test discs only
         /// </summary>
-        public string? CertificationSubmissionIdentifier { get; set; }
+        public string CertificationSubmissionIdentifier { get; set; }
     }
 }