diff --git a/Makefile b/Makefile
index b855d0d3cf..c5a0d97a58 100644
--- a/Makefile
+++ b/Makefile
@@ -207,7 +207,7 @@ work/cluster-node-7479.conf:
 	@echo cluster-enabled yes >> $@
 	@echo cluster-node-timeout 150 >> $@
 	@echo cluster-config-file $(shell pwd)/work/cluster-node-config-7479.conf >> $@
-	@echo cluster-announce-port 7443 >> $@
+	@echo cluster-announce-port 7442 >> $@
 	@echo requirepass foobared >> $@
 
 
@@ -289,7 +289,7 @@ work/stunnel.conf:
 	@echo key=$(ROOT_DIR)/work/ca/private/foo-host.decrypted.key.pem >> $@
 
 	@echo [ssl-cluster-node-1] >> $@
-	@echo accept = 127.0.0.1:7443 >> $@
+	@echo accept = 127.0.0.1:7442 >> $@
 	@echo connect = 127.0.0.1:7479 >> $@
 
 	@echo [ssl-cluster-node-2] >> $@
diff --git a/src/test/java/io/lettuce/core/cluster/RedisClusterPasswordSecuredSslIntegrationTests.java b/src/test/java/io/lettuce/core/cluster/RedisClusterPasswordSecuredSslIntegrationTests.java
index 6da62b4d2f..160bc016b7 100644
--- a/src/test/java/io/lettuce/core/cluster/RedisClusterPasswordSecuredSslIntegrationTests.java
+++ b/src/test/java/io/lettuce/core/cluster/RedisClusterPasswordSecuredSslIntegrationTests.java
@@ -44,7 +44,7 @@
  */
 class RedisClusterPasswordSecuredSslIntegrationTests extends TestSupport {
 
-    private static final int CLUSTER_PORT_SSL_1 = 7443;
+    private static final int CLUSTER_PORT_SSL_1 = 7442;
 
     private static final int CLUSTER_PORT_SSL_2 = 7444; // replica cannot replicate properly with upstream
     private static final int CLUSTER_PORT_SSL_3 = 7445;
@@ -58,7 +58,7 @@ class RedisClusterPasswordSecuredSslIntegrationTests extends TestSupport {
 
     @BeforeEach
     void before() {
-        assumeTrue(CanConnect.to(host(), CLUSTER_PORT_SSL_1), "Assume that stunnel runs on port 7443");
+        assumeTrue(CanConnect.to(host(), CLUSTER_PORT_SSL_1), "Assume that stunnel runs on port 7442");
         assumeTrue(CanConnect.to(host(), CLUSTER_PORT_SSL_2), "Assume that stunnel runs on port 7444");
         assumeTrue(CanConnect.to(host(), CLUSTER_PORT_SSL_3), "Assume that stunnel runs on port 7445");
         assumeTrue(CanConnect.to(host(), 7479), "Assume that Redis runs on port 7479");
@@ -117,7 +117,7 @@ void nodeConnectionsShouldWork() {
         try {
             node2Connection.sync().get(SLOT_1_KEY);
         } catch (RedisCommandExecutionException e) {
-            assertThat(e).hasMessage("MOVED 1 127.0.0.1:7443");
+            assertThat(e).hasMessage("MOVED 1 127.0.0.1:7442");
         }
 
         connection.close();
diff --git a/src/test/java/io/lettuce/test/settings/TestSettings.java b/src/test/java/io/lettuce/test/settings/TestSettings.java
index 663716e84e..b6312113e3 100644
--- a/src/test/java/io/lettuce/test/settings/TestSettings.java
+++ b/src/test/java/io/lettuce/test/settings/TestSettings.java
@@ -150,6 +150,11 @@ public static int port(int offset) {
      * @return {@link #sslPort()} with added {@literal offset}
      */
     public static int sslPort(int offset) {
-        return sslPort() + offset;
+        int port = sslPort() + offset;
+        if (port == 7443) {
+            throw new IllegalStateException("Please use a different port than 7443. Thank you.");
+        }
+        return port;
     }
+
 }