diff --git a/src/main/java/net/openhft/chronicle/map/Replica.java b/src/main/java/net/openhft/chronicle/map/Replica.java
index ec6e9f170..ee7888220 100644
--- a/src/main/java/net/openhft/chronicle/map/Replica.java
+++ b/src/main/java/net/openhft/chronicle/map/Replica.java
@@ -189,6 +189,7 @@ public interface Replica extends Closeable {
          *                    operation and add zeroBytes, if the identifier in the entry did not
          *                    match the maps local
          * @param chronicleId is the channel id used to identify the canonical map or queue
+         * @param keys        list of keys corresponding to given ReplicableEntry (added to during the call)
          */
         void writeExternalEntry(ReplicableEntry entry, Bytes payload, @NotNull Bytes destination, int chronicleId, ArrayList<String> keys );
 
diff --git a/src/test/java/net/openhft/chronicle/map/BasicReplicationTest.java b/src/test/java/net/openhft/chronicle/map/BasicReplicationTest.java
index 38a0f48c0..9dc28723b 100644
--- a/src/test/java/net/openhft/chronicle/map/BasicReplicationTest.java
+++ b/src/test/java/net/openhft/chronicle/map/BasicReplicationTest.java
@@ -177,6 +177,7 @@ public class BasicReplicationTest {
         private final Bytes<ByteBuffer> buffer = Bytes.elasticByteBuffer(4096);
         private final ExecutorService delayedExecutor = Executors.newSingleThreadExecutor();
         private final AtomicInteger messagesInflight = new AtomicInteger(0);
+        private final ArrayList<String> keys = new ArrayList<>();
 
         IteratorAndDestinationMap(final ReplicatedChronicleMap<K, V, ?>.ModificationIterator modificationIterator,
                                   final ReplicatedChronicleMap<K, V, ?> sourceMap,
@@ -190,7 +191,8 @@ public class BasicReplicationTest {
         public void onEntry(final ReplicableEntry entry, final int chronicleId) {
             try {
                 buffer.clear();
-                sourceMap.writeExternalEntry(entry, null, buffer, chronicleId);
+                keys.clear();
+                sourceMap.writeExternalEntry(entry, null, buffer, chronicleId,keys);
 
                 buffer.readPosition(0);
                 buffer.readLimit(buffer.writePosition());
@@ -221,4 +223,4 @@ public class BasicReplicationTest {
             destinationMap.setRemoteNodeCouldBootstrapFrom((byte) chronicleId, bootstrapTime);
         }
     }
-}
\ No newline at end of file
+}