diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/AbstractTracingSpan.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/AbstractTracingSpan.java
index 7e39cff4e729cd5450afc987a6a82b5765ea3da0..90d174d025675b6e27509e8dc4c0a8d83930f627 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/AbstractTracingSpan.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/AbstractTracingSpan.java
@@ -16,7 +16,6 @@
  *
  */
 
-
 package org.apache.skywalking.apm.agent.core.context.trace;
 
 import java.util.LinkedList;
@@ -280,6 +279,11 @@ public abstract class AbstractTracingSpan implements AbstractSpan {
                 spanBuilder.addLogs(log.transform());
             }
         }
+        if (this.refs != null) {
+            for (TraceSegmentRef ref : this.refs) {
+                spanBuilder.addRefs(ref.transform());
+            }
+        }
 
         return spanBuilder;
     }
diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java
index 2870a4b4065249ee10c81f3e04b217df3fd1767d..b8b3b00fc50f8a5c04a17de21b08a37758ea1c24 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/trace/EntrySpan.java
@@ -19,7 +19,6 @@
 package org.apache.skywalking.apm.agent.core.context.trace;
 
 import org.apache.skywalking.apm.agent.core.dictionary.DictionaryUtil;
-import org.apache.skywalking.apm.network.proto.SpanObject;
 import org.apache.skywalking.apm.network.trace.component.Component;
 
 /**
@@ -127,16 +126,6 @@ public class EntrySpan extends StackBasedTracingSpan {
         return false;
     }
 
-    @Override public SpanObject.Builder transform() {
-        SpanObject.Builder builder = super.transform();
-        if (refs != null) {
-            for (TraceSegmentRef ref : refs) {
-                builder.addRefs(ref.transform());
-            }
-        }
-        return builder;
-    }
-
     private void clearWhenRestart() {
         this.componentId = DictionaryUtil.nullValue();
         this.componentName = null;