diff --git a/test/Microsoft.DotNet.Tools.Tests.Utilities/BufferedReporter.cs b/test/Microsoft.DotNet.Tools.Tests.Utilities/BufferedReporter.cs
index d4c865b08..e657e324c 100644
--- a/test/Microsoft.DotNet.Tools.Tests.Utilities/BufferedReporter.cs
+++ b/test/Microsoft.DotNet.Tools.Tests.Utilities/BufferedReporter.cs
@@ -1,3 +1,5 @@
+#nullable enable
+
 using System;
 using System.Collections.Generic;
 using Microsoft.DotNet.Cli.Utils;
@@ -8,6 +10,8 @@ namespace Microsoft.DotNet.Tools.Test.Utilities
     {
         public List<string> Lines { get; private set; } = new List<string>();
 
+        public void WriteLine(string format, params object?[] args) => WriteLine(string.Format(format, args));
+
         public void WriteLine(string message)
         {
             Lines.Add(message);