diff --git a/SabreTools.DatTools/Splitter.cs b/SabreTools.DatTools/Splitter.cs
index 53894383..d330e5f7 100644
--- a/SabreTools.DatTools/Splitter.cs
+++ b/SabreTools.DatTools/Splitter.cs
@@ -81,7 +81,7 @@ namespace SabreTools.DatTools
             extADat.Header.SetFieldValue<string?>(Models.Metadata.Header.NameKey, extADat.Header.GetStringFieldValue(Models.Metadata.Header.NameKey) + $" ({extAString})");
             extADat.Header.SetFieldValue<string?>(Models.Metadata.Header.DescriptionKey, extADat.Header.GetStringFieldValue(Models.Metadata.Header.DescriptionKey) + $" ({extAString})");
 
-            string extBString = string.Join(",", extB);
+            string extBString = string.Join(",", [.. extB]);
             extBDat = Parser.CreateDatFile((DatHeader)datFile.Header.Clone(), datFile.Modifiers);
             extBDat.Header.SetFieldValue<string?>(DatHeader.FileNameKey, extBDat.Header.GetStringFieldValue(DatHeader.FileNameKey) + $" ({extBString})");
             extBDat.Header.SetFieldValue<string?>(Models.Metadata.Header.NameKey, extBDat.Header.GetStringFieldValue(Models.Metadata.Header.NameKey) + $" ({extBString})");