diff --git a/SabreTools.Helper/Tools/Output.cs b/SabreTools.Helper/Tools/Output.cs
index 1c7072be..4372c2b3 100644
--- a/SabreTools.Helper/Tools/Output.cs
+++ b/SabreTools.Helper/Tools/Output.cs
@@ -25,6 +25,12 @@ namespace SabreTools.Helper
 		/// </remarks>
 		public static bool WriteDatfile(Dat datdata, string outDir, Logger logger, bool norename = true, bool stats = false)
 		{
+			// If the DAT has no output format, default to XML
+			if (datdata.OutputFormat == OutputFormat.None)
+			{
+				datdata.OutputFormat = OutputFormat.Xml;
+			}
+
 			// Output initial statistics, for kicks
 			if (stats)
 			{
diff --git a/SabreTools/Partials/SabreTools_Inits.cs b/SabreTools/Partials/SabreTools_Inits.cs
index 759fe73f..23481b54 100644
--- a/SabreTools/Partials/SabreTools_Inits.cs
+++ b/SabreTools/Partials/SabreTools_Inits.cs
@@ -350,10 +350,6 @@ namespace SabreTools
 			}
 			if (!outputCMP && !(outputMiss || tsv != null) && !outputRC && !outputSD && !outputXML)
 			{
-				if (merge || diff != 0)
-				{
-					userInputDat.OutputFormat = OutputFormat.Xml;
-				}
 				DatTools.Update(inputs, userInputDat, outdir, merge, diff, cascade, inplace, skip, bare, clean, softlist,
 					gamename, romname, romtype, sgt, slt, seq, crc, md5, sha1, nodump, trim, single, root, _logger);
 			}