diff --git a/cim-client-sdk/src/test/java/com/crossoverjie/cim/client/sdk/ClientTest.java b/cim-client-sdk/src/test/java/com/crossoverjie/cim/client/sdk/ClientTest.java
index bc51afaf..11509998 100644
--- a/cim-client-sdk/src/test/java/com/crossoverjie/cim/client/sdk/ClientTest.java
+++ b/cim-client-sdk/src/test/java/com/crossoverjie/cim/client/sdk/ClientTest.java
@@ -224,11 +224,13 @@ public void testReconnect() throws Exception {
                 .userName(zs)
                 .userId(zsId)
                 .build();
+        var backoffStrategy = "com.crossoverjie.cim.client.sdk.io.backoff.RandomBackoff";
 
         @Cleanup
         Client client1 = Client.builder()
                 .auth(auth1)
                 .routeUrl(routeUrl)
+                .backoffStrategy(backoffStrategy)
                 .build();
         TimeUnit.SECONDS.sleep(3);
         ClientState.State state = client1.getState();
@@ -242,6 +244,7 @@ public void testReconnect() throws Exception {
                 .auth(auth2)
                 .routeUrl(routeUrl)
                 .messageListener((client, message) -> client2Receive.set(message))
+                .backoffStrategy(backoffStrategy)
                 .build();
         TimeUnit.SECONDS.sleep(3);
         ClientState.State state2 = client2.getState();