diff --git a/dd-trace-ot/src/main/java/datadog/opentracing/PendingTrace.java b/dd-trace-ot/src/main/java/datadog/opentracing/PendingTrace.java
index 5e3eb8533e..9d39b2e41f 100644
--- a/dd-trace-ot/src/main/java/datadog/opentracing/PendingTrace.java
+++ b/dd-trace-ot/src/main/java/datadog/opentracing/PendingTrace.java
@@ -30,6 +30,7 @@ public class PendingTrace extends ConcurrentLinkedDeque<DDSpan> {
   private final DDTracer tracer;
   private final long traceId;
 
+  // TODO: consider moving these time fields into DDTracer to ensure that traces have precise relative time
   /** Trace start time in nano seconds measured up to a millisecond accuracy */
   private final long startTimeNano;
   /** Nano second ticks value at trace start */