diff --git a/cluster-api/src/main/java/io/scalecube/cluster/ClusterConfig.java b/cluster-api/src/main/java/io/scalecube/cluster/ClusterConfig.java
index 5cbd641c..39feb4b5 100644
--- a/cluster-api/src/main/java/io/scalecube/cluster/ClusterConfig.java
+++ b/cluster-api/src/main/java/io/scalecube/cluster/ClusterConfig.java
@@ -5,7 +5,6 @@
 import io.scalecube.cluster.membership.MembershipConfig;
 import io.scalecube.cluster.metadata.MetadataCodec;
 import io.scalecube.cluster.transport.api.TransportConfig;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
@@ -170,7 +169,7 @@ public ClusterConfig externalHosts(String... externalHosts) {
    */
   public ClusterConfig externalHosts(List<String> externalHosts) {
     ClusterConfig c = clone();
-    c.externalHosts = new ArrayList<>(externalHosts);
+    c.externalHosts = externalHosts;
     return c;
   }