diff --git a/pulsar-proxy/src/test/java/org/apache/pulsar/proxy/server/URLRegexLookupProxyHandlerTest.java b/pulsar-proxy/src/test/java/org/apache/pulsar/proxy/server/URLRegexLookupProxyHandlerTest.java
index 74be57395671c..94288f3438057 100644
--- a/pulsar-proxy/src/test/java/org/apache/pulsar/proxy/server/URLRegexLookupProxyHandlerTest.java
+++ b/pulsar-proxy/src/test/java/org/apache/pulsar/proxy/server/URLRegexLookupProxyHandlerTest.java
@@ -93,6 +93,7 @@ void testMatchingRegex() throws Exception {
         redirectProxyConfig.getProperties().setProperty("urlRegexLookupProxyHandlerRegex", "pulsar:\\/\\/(\\w+):\\d+");
         redirectProxyConfig.getProperties()
             .setProperty("urlRegexLookupProxyHandlerReplacement", proxyService.getServiceUrl());
+        redirectProxyConfig.setClusterName(configClusterName);
 
         @Cleanup
         ProxyService redirectProxyService = Mockito.spy(new ProxyService(redirectProxyConfig, new AuthenticationService(
@@ -149,6 +150,7 @@ void testNotMatchingRegex() throws Exception {
         redirectProxyConfig.setLookupHandler("org.apache.pulsar.proxy.server.URLRegexLookupProxyHandler");
         redirectProxyConfig.getProperties().setProperty("urlRegexLookupProxyHandlerRegex", "invalid");
         redirectProxyConfig.getProperties().setProperty("urlRegexLookupProxyHandlerReplacement", proxyService.getServiceUrl());
+        redirectProxyConfig.setClusterName(configClusterName);
 
         @Cleanup
         ProxyService redirectProxyService = Mockito.spy(new ProxyService(redirectProxyConfig, new AuthenticationService(