diff --git a/tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/clientcrash/ClientTestBase.java b/tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/clientcrash/ClientTestBase.java
index 0c9c0eb7e1..3ec5737489 100644
--- a/tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/clientcrash/ClientTestBase.java
+++ b/tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/clientcrash/ClientTestBase.java
@@ -49,7 +49,7 @@ public abstract class ClientTestBase extends SpawnedTestBase {
    }
 
    protected void assertActiveSession(final int expectedActiveSession, long timeout) throws Exception {
-      Wait.assertEquals(expectedActiveSession, server.getSessions()::size, timeout);
+      Wait.assertEquals(expectedActiveSession, () -> server.getSessions().size(), timeout);
    }
 
 }