diff --git a/Launcher.Next.Autodesk/AutodeskAdapters.cs b/Launcher.Next.Autodesk/AutodeskAdapters.cs
index b107f6e..3d05cfc 100644
--- a/Launcher.Next.Autodesk/AutodeskAdapters.cs
+++ b/Launcher.Next.Autodesk/AutodeskAdapters.cs
@@ -26,7 +26,7 @@ public sealed class StartupScriptBuilder : IStartupScriptBuilder
             ? "_.CMDECHO\n1\n_.NOMUTT\n0\n_.LOGFILEMODE\n1\n"
             : string.Empty;
         var commands = paths.Apply
-            ? "_.UNDO\nMARK\nPXP-OA\nPXP-OA\n_.UNDO\nBACK\n"
+            ? "_.UNDO\n_MARK\nPXP-OA\nPXP-OA\n_.UNDO\n_BACK\n"
             : paths.Diagnostic
             ? "PHP_REC_AUTOMATION_BEFORE_PXP_1\nPXP-OA\nPHP_REC_AUTOMATION_AFTER_PXP_1\nPHP_REC_AUTOMATION_BEFORE_PXP_2\nPXP-OA\nPHP_REC_AUTOMATION_AFTER_PXP_2\n"
             : "PXP-OA\nPXP-OA\n";
diff --git a/tests/Launcher.Next.Tests/PathAndLaunchTests.cs b/tests/Launcher.Next.Tests/PathAndLaunchTests.cs
index 3d18720..595614b 100644
--- a/tests/Launcher.Next.Tests/PathAndLaunchTests.cs
+++ b/tests/Launcher.Next.Tests/PathAndLaunchTests.cs
@@ -84,7 +84,7 @@ public sealed class PathAndLaunchTests
     [Fact] public void ApplyScript_MarksCreatesDeduplicatesAndUndoes()
     {
         var root = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("N")); Directory.CreateDirectory(root); var entry = "P.dll"; var fixture = Path.Combine(root, "fixture.dwg"); var model = Path.Combine(root, "model.dwg"); File.WriteAllText(Path.Combine(root, entry), ""); File.WriteAllText(fixture, ""); File.WriteAllText(model, "");
-        try { var script = new StartupScriptBuilder().BuildAutomationScript(new(root, entry, fixture, model, Path.Combine(root, "apply.scr"), false, true)); Assert.Contains("_.UNDO\nMARK\nPXP-OA\nPXP-OA\n_.UNDO\nBACK", script); }
+        try { var script = new StartupScriptBuilder().BuildAutomationScript(new(root, entry, fixture, model, Path.Combine(root, "apply.scr"), false, true)); Assert.Contains("_.UNDO\n_MARK\nPXP-OA\nPXP-OA\n_.UNDO\n_BACK", script); }
         finally { Directory.Delete(root, true); }
     }
     [Fact] public void DiagnosticScript_RecordsExactBytes() { var text = "PXP-OA\n"; Assert.Equal(Convert.ToHexString(System.Security.Cryptography.SHA256.HashData(System.Text.Encoding.UTF8.GetBytes(text))), Convert.ToHexString(System.Security.Cryptography.SHA256.HashData(System.Text.Encoding.UTF8.GetBytes(text)))); }