diff --git a/dd-java-agent/instrumentation/elasticsearch-rest-5/src/main/java/datadog/trace/instrumentation/elasticsearch5/Elasticsearch5RestClientInstrumentation.java b/dd-java-agent/instrumentation/elasticsearch-rest-5/src/main/java/datadog/trace/instrumentation/elasticsearch5/Elasticsearch5RestClientInstrumentation.java
index 49e485b338..256c04e90e 100644
--- a/dd-java-agent/instrumentation/elasticsearch-rest-5/src/main/java/datadog/trace/instrumentation/elasticsearch5/Elasticsearch5RestClientInstrumentation.java
+++ b/dd-java-agent/instrumentation/elasticsearch-rest-5/src/main/java/datadog/trace/instrumentation/elasticsearch5/Elasticsearch5RestClientInstrumentation.java
@@ -35,6 +35,11 @@ public class Elasticsearch5RestClientInstrumentation extends Instrumenter.Defaul
     return false;
   }
 
+  @Override
+  public String[] helperClassNames() {
+    return new String[] {"datadog.trace.instrumentation.elasticsearch5.RestResponseListener"};
+  }
+
   @Override
   public ElementMatcher typeMatcher() {
     return not(isInterface()).and(named("org.elasticsearch.client.RestClient"));