diff --git a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/BlameCollector.cs b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/BlameCollector.cs
index 334dbb7dfe..3f4ce6071f 100644
--- a/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/BlameCollector.cs
+++ b/src/Microsoft.TestPlatform.Extensions.BlameDataCollector/BlameCollector.cs
@@ -166,7 +166,7 @@ public override void Initialize(
                 }
             }
 
-            this.attachmentGuid = Guid.NewGuid().ToString().Replace("-", string.Empty);
+            this.attachmentGuid = Guid.NewGuid().ToString("N");
 
             if (this.collectProcessDumpOnTestHostHang)
             {