diff --git a/src/main/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcaster.java b/src/main/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcaster.java
index 88a6f6eea..202ad0eb8 100644
--- a/src/main/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcaster.java
+++ b/src/main/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcaster.java
@@ -279,7 +279,6 @@ class BytesExternalizableImpl implements BytesExternalizable {
     @Override
     public void writeExternalBytes(@NotNull Bytes destination) {
 
-        modificationsComplete.set(true);
 
         if (bootstrapRequired.getAndSet(false)) {
             //destination.write(BOOTSTRAP_BYTES);
@@ -307,8 +306,7 @@ class BytesExternalizableImpl implements BytesExternalizable {
         destination.writeUnsignedShort((int) bytes.remaining());
         destination.write(bytes);
 
-        if (!(modificationsComplete.get()))
-            modificationNotifier.onChange();
+
     }
 
     @Override
@@ -357,8 +355,7 @@ class BytesExternalizableImpl implements BytesExternalizable {
 
     }
 
-    private void onChange() {
-        modificationsComplete.set(false);
+    public void onChange() {
         modificationNotifier.onChange();
     }
 
@@ -424,18 +421,19 @@ class BytesExternalizableImpl implements BytesExternalizable {
 
     public void sendBootStrap() {
         bootstrapRequired.set(true);
-        onChange();
+
     }
 
     public void add(InetSocketAddress interfaceAddress) {
         allNodes.add(interfaceAddress);
-        onChange();
+
     }
 
 
     public void add(byte identifier) {
         allNodes.activeIdentifierBitSet().set(identifier);
-        onChange();
+
     }
 
+
 }
\ No newline at end of file
diff --git a/src/test/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcasterTest.java b/src/test/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcasterTest.java
index 4dc213935..69daa8fa5 100644
--- a/src/test/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcasterTest.java
+++ b/src/test/java/net/openhft/chronicle/map/NodeDiscoveryHostPortBroadcasterTest.java
@@ -42,12 +42,12 @@ public class NodeDiscoveryHostPortBroadcasterTest extends TestCase {
         externalizable.add((byte) 3);
         externalizable.add((byte) 4);
         externalizable.add((byte) 1);
+        externalizable.onChange();
 
         Thread.sleep(1000);
     }
 
 
-
     @Test
     public void testJustListen() throws IOException, InterruptedException {
 
@@ -70,8 +70,6 @@ public class NodeDiscoveryHostPortBroadcasterTest extends TestCase {
         Thread.sleep(10000000);
 
 
-
-
     }
 
 }