diff --git a/SabreTools.DatTools/DatFileTool.cs b/SabreTools.DatTools/DatFileTool.cs
index 1f7aa898..44cd16ee 100644
--- a/SabreTools.DatTools/DatFileTool.cs
+++ b/SabreTools.DatTools/DatFileTool.cs
@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using SabreTools.Core;
 using SabreTools.DatFiles;
 using SabreTools.DatItems;
+using SabreTools.Filtering;
 using SabreTools.IO;
 using SabreTools.Logging;
 
diff --git a/SabreTools.DatTools/Replacer.cs b/SabreTools.Filtering/Replacer.cs
similarity index 99%
rename from SabreTools.DatTools/Replacer.cs
rename to SabreTools.Filtering/Replacer.cs
index 6d6570eb..d16a1364 100644
--- a/SabreTools.DatTools/Replacer.cs
+++ b/SabreTools.Filtering/Replacer.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using SabreTools.Core;
 using SabreTools.DatItems;
 
-namespace SabreTools.DatTools
+namespace SabreTools.Filtering
 {
     /// <summary>
     /// Replace fields in DatItems
diff --git a/SabreTools.Test/DatTools/ReplacerTests.cs b/SabreTools.Test/Filtering/ReplacerTests.cs
similarity index 95%
rename from SabreTools.Test/DatTools/ReplacerTests.cs
rename to SabreTools.Test/Filtering/ReplacerTests.cs
index 30e0f449..09ebf25e 100644
--- a/SabreTools.Test/DatTools/ReplacerTests.cs
+++ b/SabreTools.Test/Filtering/ReplacerTests.cs
@@ -2,10 +2,10 @@ using System.Collections.Generic;
 
 using SabreTools.Core;
 using SabreTools.DatItems;
-using SabreTools.DatTools;
+using SabreTools.Filtering;
 using Xunit;
 
-namespace SabreTools.Test.DatTools
+namespace SabreTools.Test.Filtering
 {
     public class ReplacerTests
     {