diff --git a/SabreTools.Metadata.Filter/FilterKey.cs b/SabreTools.Metadata.Filter/FilterKey.cs
index 9a207be5..491b9255 100644
--- a/SabreTools.Metadata.Filter/FilterKey.cs
+++ b/SabreTools.Metadata.Filter/FilterKey.cs
@@ -101,22 +101,6 @@ namespace SabreTools.Metadata.Filter
         /// </summary>
         private static bool ParseHeaderFilterId(ref string itemName, ref string fieldName)
         {
-            // Get the set of constants
-            var constants = TypeHelper.GetConstants(typeof(Header));
-            if (constants is not null)
-            {
-                // Get if there's a match to a constant
-                string localFieldName = fieldName;
-                string? constantMatch = Array.Find(constants, c => string.Equals(c, localFieldName, StringComparison.OrdinalIgnoreCase));
-                if (constantMatch is not null)
-                {
-                    // Return the sanitized ID
-                    itemName = "header";
-                    fieldName = constantMatch;
-                    return true;
-                }
-            }
-
             // Get the set of properties
             var properties = TypeHelper.GetProperties(typeof(Header));
             if (properties is not null)
@@ -141,22 +125,6 @@ namespace SabreTools.Metadata.Filter
         /// </summary>
         private static bool ParseMachineFilterId(ref string itemName, ref string fieldName)
         {
-            // Get the set of constants
-            var constants = TypeHelper.GetConstants(typeof(Machine));
-            if (constants is not null)
-            {
-                // Get if there's a match to a constant
-                string localFieldName = fieldName;
-                string? constantMatch = Array.Find(constants, c => string.Equals(c, localFieldName, StringComparison.OrdinalIgnoreCase));
-                if (constantMatch is not null)
-                {
-                    // Return the sanitized ID
-                    itemName = "machine";
-                    fieldName = constantMatch;
-                    return true;
-                }
-            }
-
             // Get the set of properties
             var properties = TypeHelper.GetProperties(typeof(Machine));
             if (properties is not null)
@@ -235,16 +203,6 @@ namespace SabreTools.Metadata.Filter
             if (itemType is null)
                 return null;
 
-            // Get the set of constants
-            var constants = TypeHelper.GetConstants(itemType);
-            if (constants is not null)
-            {
-                // Get if there's a match to a constant
-                string? constantMatch = Array.Find(constants, c => string.Equals(c, fieldName, StringComparison.OrdinalIgnoreCase));
-                if (constantMatch is not null)
-                    return constantMatch;
-            }
-
             // Get the set of properties
             var properties = TypeHelper.GetProperties(itemType);
             if (properties is not null)
diff --git a/SabreTools.Metadata/TypeHelper.cs b/SabreTools.Metadata/TypeHelper.cs
index 10c85ed5..7e732e67 100644
--- a/SabreTools.Metadata/TypeHelper.cs
+++ b/SabreTools.Metadata/TypeHelper.cs
@@ -2,7 +2,6 @@ using System;
 using System.Collections.Generic;
 using System.Reflection;
 using System.Xml.Serialization;
-using SabreTools.Data.Models;
 using SabreTools.Data.Models.Metadata;
 
 namespace SabreTools.Metadata
@@ -10,30 +9,6 @@ namespace SabreTools.Metadata
     // TODO: Investigate ways of either caching or speeding up these methods
     public static class TypeHelper
     {
-        /// <summary>
-        /// Get constant values for the given type, if possible
-        /// </summary>
-        /// <remarks>Does not return any values marked with the <see cref="NoFilterAttribute"/></remarks>
-        public static string[]? GetConstants(Type? type)
-        {
-            if (type is null)
-                return null;
-
-            var fields = type.GetFields(BindingFlags.Static | BindingFlags.Public | BindingFlags.FlattenHierarchy);
-            if (fields is null)
-                return null;
-
-            FieldInfo[] noFilterFields = Array.FindAll(fields,
-                f => f.IsLiteral
-                && !f.IsInitOnly
-                && Attribute.GetCustomAttributes(f, typeof(NoFilterAttribute)).Length == 0);
-
-            string[] constantValues = Array.ConvertAll(noFilterFields,
-                f => (f.GetRawConstantValue() as string) ?? string.Empty);
-
-            return Array.FindAll(constantValues, s => s.Length > 0);
-        }
-
         /// <summary>
         /// Attempt to get all DatItem types
         /// </summary>