diff --git a/cluster/src/test/scala/org/apache/pekko/cluster/MixedProtocolClusterSpec.scala b/cluster/src/test/scala/org/apache/pekko/cluster/MixedProtocolClusterSpec.scala
index e876c80c3e..f3c8c73adb 100644
--- a/cluster/src/test/scala/org/apache/pekko/cluster/MixedProtocolClusterSpec.scala
+++ b/cluster/src/test/scala/org/apache/pekko/cluster/MixedProtocolClusterSpec.scala
@@ -87,7 +87,7 @@ class MixedProtocolClusterSpec extends PekkoSpec with ClusterTestKit {
 
   "A node using the akka protocol" must {
 
-    "be allowed to join a cluster with a node using the pekko protocol (udp)" taggedAs LongRunningTest ignore {
+    "be allowed to join a cluster with a node using the pekko protocol (udp)" taggedAs LongRunningTest in {
 
       val clusterTestUtil = new ClusterTestUtil(system.name)
       try {
@@ -138,7 +138,7 @@ class MixedProtocolClusterSpec extends PekkoSpec with ClusterTestKit {
       }
     }
 
-    "allow a node using the pekko protocol to join the cluster (udp)" taggedAs LongRunningTest ignore {
+    "allow a node using the pekko protocol to join the cluster (udp)" taggedAs LongRunningTest in {
 
       val clusterTestUtil = new ClusterTestUtil(system.name)
       try {