diff --git a/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/BuyerAsOffererModel.java b/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/BuyerAsOffererModel.java
index 86902b5b10..b2db1949cb 100644
--- a/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/BuyerAsOffererModel.java
+++ b/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/BuyerAsOffererModel.java
@@ -28,11 +28,13 @@ import io.bitsquare.user.User;
 
 import org.bitcoinj.core.Transaction;
 
+import java.io.Serializable;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class BuyerAsOffererModel extends OfferSharedModel {
-
+public class BuyerAsOffererModel extends OfferSharedModel implements Serializable {
+    private static final long serialVersionUID = 5000457153390911569L;
     private static final Logger log = LoggerFactory.getLogger(BuyerAsOffererModel.class);
 
     private final Trade trade;
@@ -42,11 +44,6 @@ public class BuyerAsOffererModel extends OfferSharedModel {
     private Transaction publishedDepositTx;
     private String takeOfferFeeTxId;
 
-
-    ///////////////////////////////////////////////////////////////////////////////////////////
-    // Constructor
-    ///////////////////////////////////////////////////////////////////////////////////////////
-
     public BuyerAsOffererModel(Trade trade,
                                TradeMessageService tradeMessageService,
                                WalletService walletService,
diff --git a/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/OffererModel.java b/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/OffererModel.java
index f28a88c827..fa253fea90 100644
--- a/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/OffererModel.java
+++ b/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/OffererModel.java
@@ -24,9 +24,13 @@ import org.bitcoinj.core.ECKey;
 import org.bitcoinj.core.Transaction;
 import org.bitcoinj.core.TransactionOutput;
 
+import java.io.Serializable;
+
 import java.util.List;
 
-public class OffererModel {
+public class OffererModel implements Serializable {
+    private static final long serialVersionUID = -1845177552607819927L;
+    
     public byte[] pubKey;
     public ECKey.ECDSASignature payoutSignature;
     public Coin payoutAmount;
diff --git a/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/TakerModel.java b/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/TakerModel.java
index b65d7de33d..de9feea293 100644
--- a/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/TakerModel.java
+++ b/core/src/main/java/io/bitsquare/trade/protocol/trade/offerer/models/TakerModel.java
@@ -24,11 +24,15 @@ import org.bitcoinj.core.Coin;
 import org.bitcoinj.core.Transaction;
 import org.bitcoinj.core.TransactionOutput;
 
+import java.io.Serializable;
+
 import java.security.PublicKey;
 
 import java.util.List;
 
-public class TakerModel {
+public class TakerModel implements Serializable{
+    private static final long serialVersionUID = 2660909397210346486L;
+    
     public Peer peer;
     public String accountId;
     public FiatAccount fiatAccount;
diff --git a/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/OffererModel.java b/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/OffererModel.java
index f034f1deb4..eecb935523 100644
--- a/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/OffererModel.java
+++ b/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/OffererModel.java
@@ -23,9 +23,13 @@ import org.bitcoinj.core.Coin;
 import org.bitcoinj.core.ECKey;
 import org.bitcoinj.core.TransactionOutput;
 
+import java.io.Serializable;
+
 import java.util.List;
 
-public class OffererModel {
+public class OffererModel implements Serializable {
+    private static final long serialVersionUID = 1582902150121576205L;
+
     public OffererModel(Peer peer) {
         this.peer = peer;
     }
diff --git a/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/SellerAsTakerModel.java b/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/SellerAsTakerModel.java
index 26e8dd690c..e3aba69a23 100644
--- a/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/SellerAsTakerModel.java
+++ b/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/SellerAsTakerModel.java
@@ -25,15 +25,17 @@ import io.bitsquare.persistence.Persistence;
 import io.bitsquare.trade.Trade;
 import io.bitsquare.trade.TradeMessageService;
 import io.bitsquare.trade.protocol.trade.OfferSharedModel;
-import io.bitsquare.trade.protocol.trade.offerer.models.TakerModel;
 import io.bitsquare.user.User;
 
 import org.bitcoinj.core.Transaction;
 
+import java.io.Serializable;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class SellerAsTakerModel extends OfferSharedModel {
+public class SellerAsTakerModel extends OfferSharedModel implements Serializable {
+    private static final long serialVersionUID = -963501132927618376L;
     private static final Logger log = LoggerFactory.getLogger(SellerAsTakerModel.class);
 
     private final Trade trade;
diff --git a/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/TakerModel.java b/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/TakerModel.java
index e622d01d23..afa883edff 100644
--- a/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/TakerModel.java
+++ b/core/src/main/java/io/bitsquare/trade/protocol/trade/taker/models/TakerModel.java
@@ -23,15 +23,19 @@ import org.bitcoinj.core.Coin;
 import org.bitcoinj.core.Transaction;
 import org.bitcoinj.core.TransactionOutput;
 
+import java.io.Serializable;
+
 import java.util.List;
 
-class TakerModel {
-
+public class TakerModel implements Serializable {
+    private static final long serialVersionUID = -4041809885931756860L;
+    
     public List<TransactionOutput> connectedOutputsForAllInputs;
     public List<TransactionOutput> outputs;
     public Transaction depositTx;
     public FiatAccount fiatAccount;
     public String accountId;
     public Coin payoutAmount;
+    public byte[] pubKey;
 
 }