diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java
index f2050612c..92fb75280 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/src/main/java/org/skywalking/apm/plugin/mongodb/v2/MongoDBCollectionMethodInterceptor.java
@@ -84,7 +84,6 @@ public class MongoDBCollectionMethodInterceptor implements InstanceMethodsAround
 
     @Override
     public void onConstruct(EnhancedInstance objInst, Object[] allArguments) {
-        ((EnhancedInstance)allArguments[0]).getSkyWalkingDynamicField();
         objInst.setSkyWalkingDynamicField(((EnhancedInstance)allArguments[0]).getSkyWalkingDynamicField().toString());
     }