diff --git a/test/jdk/java/net/httpclient/HttpClientLocalAddrTest.java b/test/jdk/java/net/httpclient/HttpClientLocalAddrTest.java
index f97cfcec243..051a31dcb1b 100644
--- a/test/jdk/java/net/httpclient/HttpClientLocalAddrTest.java
+++ b/test/jdk/java/net/httpclient/HttpClientLocalAddrTest.java
@@ -64,6 +64,7 @@ import static java.net.http.HttpClient.Version.HTTP_2;
  *      -Djdk.httpclient.HttpClient.log=frames,ssl,requests,responses,errors
  *      -Djdk.internal.httpclient.debug=true
  *      -Dsun.net.httpserver.idleInterval=50000
+ *      -Djdk.tracePinnedThreads=full
  *      HttpClientLocalAddrTest
  *
  * @run testng/othervm/java.security.policy=httpclient-localaddr-security.policy