diff --git a/reader/src/main/scala/com/expedia/www/haystack/trace/reader/readers/utils/SpanUtils.scala b/reader/src/main/scala/com/expedia/www/haystack/trace/reader/readers/utils/SpanUtils.scala
index f8ed248d..a98946c0 100644
--- a/reader/src/main/scala/com/expedia/www/haystack/trace/reader/readers/utils/SpanUtils.scala
+++ b/reader/src/main/scala/com/expedia/www/haystack/trace/reader/readers/utils/SpanUtils.scala
@@ -102,7 +102,7 @@ object SpanUtils {
     val duration = (longestDurationSpan.getStartTime + longestDurationSpan.getDuration) - startTime
 
     val autoGenSpanBuilder = Span.newBuilder()
-      .setServiceName(earliestRoot.getServiceName)
+      .setServiceName(AUTOGEN_SERVICE_NAME)
       .setOperationName(AUTOGEN_OPERATION_NAME)
       .setTraceId(earliestRoot.getTraceId)
       .setSpanId(rootSpanId)
@@ -121,7 +121,8 @@ object SpanUtils {
 }
 
 object SpanMarkers {
-  val AUTOGEN_OPERATION_NAME = "auto-generated"
+  val AUTOGEN_SERVICE_NAME = "unknown"
+  val AUTOGEN_OPERATION_NAME = "unknown"
   val AUTOGEN_REASON_TAG = "X-HAYSTACK-AUTOGEN-REASON"
   val AUTOGEN_SPAN_ID_TAG = "X-HAYSTACK-AUTOGEN-SPAN-ID"
   val AUTOGEN_FLAG_TAG = "X-HAYSTACK-AUTOGEN"