diff --git a/src/main/java/com/profiler/context/SubSpanList.java b/src/main/java/com/profiler/context/SubSpanList.java
index 18ea25bdc..760664348 100644
--- a/src/main/java/com/profiler/context/SubSpanList.java
+++ b/src/main/java/com/profiler/context/SubSpanList.java
@@ -44,7 +44,7 @@ public class SubSpanList implements Thriftable {
 
             tSubSpan.setAgentId(Agent.getInstance().getAgentId());
 
-            long parentSpanStartTime = subSpan.getStartTime();
+            long parentSpanStartTime = subSpan.getParentSpan().getStartTime();
             tSubSpan.setStartElapsed((int) (subSpan.getStartTime() - parentSpanStartTime));
             tSubSpan.setEndElapsed((int) (subSpan.getEndTime() - subSpan.getStartTime()));