diff --git a/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClient.java b/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClient.java
index 6c41613c..cba2946e 100644
--- a/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClient.java
+++ b/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClient.java
@@ -469,7 +469,7 @@ public class PaymentChannelClient implements IPaymentChannelClient {
      * @return a future that completes when the server acknowledges receipt and acceptance of the payment.
      */
     public ListenableFuture<Coin> incrementPayment(Coin size) throws ValueOutOfRangeException, IllegalStateException {
-        return  incrementPayment(size, ByteString.EMPTY);
+        return  incrementPayment(size, null);
     }
 
     /**
diff --git a/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClientConnection.java b/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClientConnection.java
index 69fd5045..610b4da7 100644
--- a/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClientConnection.java
+++ b/core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClientConnection.java
@@ -137,7 +137,7 @@ public class PaymentChannelClientConnection {
      *                               (see {@link PaymentChannelClientConnection#getChannelOpenFuture()} for the second)
      */
     public ListenableFuture<Coin> incrementPayment(Coin size) throws ValueOutOfRangeException, IllegalStateException {
-        return channelClient.incrementPayment(size, ByteString.EMPTY);
+        return channelClient.incrementPayment(size, null);
     }
     /**
      * Increments the total value which we pay the server.
diff --git a/core/src/test/java/com/google/bitcoin/protocols/channels/ChannelConnectionTest.java b/core/src/test/java/com/google/bitcoin/protocols/channels/ChannelConnectionTest.java
index 0b08f801..b24fb388 100644
--- a/core/src/test/java/com/google/bitcoin/protocols/channels/ChannelConnectionTest.java
+++ b/core/src/test/java/com/google/bitcoin/protocols/channels/ChannelConnectionTest.java
@@ -171,8 +171,8 @@ public class ChannelConnectionTest extends TestWithWallet {
 
         Thread.sleep(1250); // No timeouts once the channel is open
         Coin amount = client.state().getValueSpent();
-        q.take().assertPair(amount, ByteString.EMPTY);
-        ByteString[] infos = new ByteString[]{ByteString.EMPTY, ByteString.copyFromUtf8("one"),ByteString.copyFromUtf8("two")};
+        q.take().assertPair(amount, null);
+        ByteString[] infos = new ByteString[]{null, ByteString.copyFromUtf8("one"),ByteString.copyFromUtf8("two")};
         for (ByteString info : infos) {
             client.incrementPayment(CENT, info).get();
             amount = amount.add(CENT);