diff --git a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcDumpDumper.cs b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcDumpDumper.cs
index 0668912fdd..8fd338b744 100644
--- a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcDumpDumper.cs
+++ b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcDumpDumper.cs
@@ -54,7 +54,7 @@ public ProcDumpDumper(IProcessHelper processHelper, IFileHelper fileHelper, IEnv
         // Console.ForegroundColor = ConsoleColor.White;
         // Log all standard output message of procdump in diag files.
         // Otherwise they end up coming on console in pipleine.
-        EqtTrace.Info("ProcDumpDumper.OutputReceivedCallback: Output received from procdump process: " + data);
+        EqtTrace.Info($"ProcDumpDumper.OutputReceivedCallback: Output received from procdump process: {data ?? "<null>"}");
 
     /// <inheritdoc/>
     public void WaitForDumpToFinish()
diff --git a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcessDumpUtility.cs b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcessDumpUtility.cs
index 1bf3db367a..aa52d7ac75 100644
--- a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcessDumpUtility.cs
+++ b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/ProcessDumpUtility.cs
@@ -39,10 +39,10 @@ public ProcessDumpUtility(IProcessHelper processHelper, IFileHelper fileHelper,
         _crashDumperFactory = crashDumperFactory;
     }
 
-    protected Action<object, string> OutputReceivedCallback => (process, data) =>
+    protected Action<object?, string?> OutputReceivedCallback => (process, data) =>
         // Log all standard output message of procdump in diag files.
         // Otherwise they end up coming on console in pipleine.
-        EqtTrace.Info("ProcessDumpUtility.OutputReceivedCallback: Output received from procdump process: " + data);
+        EqtTrace.Info($"ProcessDumpUtility.OutputReceivedCallback: Output received from procdump process: {data ?? "<null>"}");
 
     /// <inheritdoc/>
     public IEnumerable<string> GetDumpFiles(bool warnOnNoDumpFiles, bool processCrashed)
diff --git a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/WindowsHangDumper.cs b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/WindowsHangDumper.cs
index 9af2d56146..881382c367 100644
--- a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/WindowsHangDumper.cs
+++ b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/WindowsHangDumper.cs
@@ -33,7 +33,7 @@ public WindowsHangDumper(IProcessHelper processHelper, Action<string>? logWarnin
         // Console.ForegroundColor = ConsoleColor.White;
         // Log all standard output message of procdump in diag files.
         // Otherwise they end up coming on console in pipleine.
-        EqtTrace.Info("ProcDumpDumper.OutputReceivedCallback: Output received from procdump process: " + data);
+        EqtTrace.Info($"ProcDumpDumper.OutputReceivedCallback: Output received from procdump process: {data ?? "<null>"}");
 
     public void Dump(int processId, string outputDirectory, DumpTypeOption type)
     {