diff --git a/src/Analyzers/MSTest.Analyzers/Helpers/ApplicationStateGuard.cs b/src/Analyzers/MSTest.Analyzers/Helpers/ApplicationStateGuard.cs
index 39acf92967..02826efc45 100644
--- a/src/Analyzers/MSTest.Analyzers/Helpers/ApplicationStateGuard.cs
+++ b/src/Analyzers/MSTest.Analyzers/Helpers/ApplicationStateGuard.cs
@@ -1,12 +1,13 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using System.Diagnostics;
 using System.Runtime.CompilerServices;
 
 namespace MSTest.Analyzers.Helpers;
 
 internal static class ApplicationStateGuard
 {
-    public static InvalidOperationException Unreachable([CallerFilePath] string? path = null, [CallerLineNumber] int line = 0)
+    public static UnreachableException Unreachable([CallerFilePath] string? path = null, [CallerLineNumber] int line = 0)
         => new($"This program location is thought to be unreachable. File='{path}' Line={line}");
 }