diff --git a/demo/src/main/java/ch/dissem/bitmessage/demo/Main.java b/demo/src/main/java/ch/dissem/bitmessage/demo/Main.java
index c2cc7a5..1da2910 100644
--- a/demo/src/main/java/ch/dissem/bitmessage/demo/Main.java
+++ b/demo/src/main/java/ch/dissem/bitmessage/demo/Main.java
@@ -65,6 +65,11 @@ public class Main {
             .port(48444);
         if (options.localPort != null) {
             ctxBuilder.nodeRegistry(new NodeRegistry() {
+                @Override
+                public void clear() {
+                    // NO OP
+                }
+
                 @Override
                 public List<NetworkAddress> getKnownAddresses(int limit, long... streams) {
                     return Arrays.stream(streams)