diff --git a/lib/model/addressmanager.js b/lib/model/addressmanager.js
index ca1740b..24f43c5 100644
--- a/lib/model/addressmanager.js
+++ b/lib/model/addressmanager.js
@@ -1,12 +1,9 @@
 var _ = require('lodash');
 var $ = require('preconditions').singleton();
 
-var STRATEGIES = {
-  BIP44: 'BIP44',
-  BIP45: 'BIP45',
-};
+var WalletUtils = require('bitcore-wallet-utils');
 
-var SHARED_INDEX = 0x80000000 - 1;
+var BIP45_SHARED_INDEX = 0x80000000 - 1;
 
 function AddressManager() {};
 
@@ -16,12 +13,12 @@ AddressManager.create = function(opts) {
   var x = new AddressManager();
 
   x.version = 2;
-  x.derivationStrategy = opts.derivationStrategy || STRATEGIES.BIP44;
-  $.checkState(_.contains(_.values(STRATEGIES), x.derivationStrategy));
+  x.derivationStrategy = opts.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP44;
+  $.checkState(_.contains(_.values(WalletUtils.DERIVATION_STRATEGIES), x.derivationStrategy));
 
   x.receiveAddressIndex = 0;
   x.changeAddressIndex = 0;
-  x.copayerIndex = (opts && _.isNumber(opts.copayerIndex)) ? opts.copayerIndex : SHARED_INDEX;
+  x.copayerIndex = (opts && _.isNumber(opts.copayerIndex)) ? opts.copayerIndex : BIP45_SHARED_INDEX;
 
   return x;
 };
@@ -30,7 +27,7 @@ AddressManager.fromObj = function(obj) {
   var x = new AddressManager();
 
   x.version = obj.version;
-  x.derivationStrategy = obj.derivationStrategy || STRATEGIES.BIP45;
+  x.derivationStrategy = obj.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
   x.receiveAddressIndex = obj.receiveAddressIndex;
   x.changeAddressIndex = obj.changeAddressIndex;
   x.copayerIndex = obj.copayerIndex;
@@ -40,7 +37,7 @@ AddressManager.fromObj = function(obj) {
 
 AddressManager.prototype.supportsDerivation = function() {
   // BIP44 does not support copayer specific indexes
-  return !(this.derivationStrategy == STRATEGIES.BIP44 && this.copayerIndex != SHARED_INDEX);
+  return !(this.derivationStrategy == WalletUtils.DERIVATION_STRATEGIES.BIP44 && this.copayerIndex != BIP45_SHARED_INDEX);
 };
 
 AddressManager.prototype._incrementIndex = function(isChange) {
@@ -62,7 +59,7 @@ AddressManager.prototype.rewindIndex = function(isChange, n) {
 
 AddressManager.prototype.getCurrentAddressPath = function(isChange) {
   return 'm/' +
-    (this.derivationStrategy == STRATEGIES.BIP45 ? this.copayerIndex + '/' : '') +
+    (this.derivationStrategy == WalletUtils.DERIVATION_STRATEGIES.BIP45 ? this.copayerIndex + '/' : '') +
     (isChange ? 1 : 0) + '/' +
     (isChange ? this.changeAddressIndex : this.receiveAddressIndex);
 };
diff --git a/lib/model/copayer.js b/lib/model/copayer.js
index 73233f6..3fffe72 100644
--- a/lib/model/copayer.js
+++ b/lib/model/copayer.js
@@ -37,7 +37,7 @@ Copayer.create = function(opts) {
   }];
 
   x.addressManager = AddressManager.create({
-    derivationStrategy: opts.derivationStrategy || 'BIP45',
+    derivationStrategy: opts.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45,
     copayerIndex: opts.copayerIndex,
   });
 
diff --git a/lib/model/txproposal.js b/lib/model/txproposal.js
index c574ae6..b8cd599 100644
--- a/lib/model/txproposal.js
+++ b/lib/model/txproposal.js
@@ -71,7 +71,7 @@ TxProposal.create = function(opts) {
   x.excludeUnconfirmedUtxos = opts.excludeUnconfirmedUtxos;
   x.proposalSignaturePubKey = opts.proposalSignaturePubKey;
   x.proposalSignaturePubKeySig = opts.proposalSignaturePubKeySig;
-  x.derivationStrategy = opts.derivationStrategy || 'BIP45';
+  x.derivationStrategy = opts.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
 
   if (_.isFunction(TxProposal._create[x.type])) {
     TxProposal._create[x.type](x, opts);
@@ -118,7 +118,7 @@ TxProposal.fromObj = function(obj) {
   x.excludeUnconfirmedUtxos = obj.excludeUnconfirmedUtxos;
   x.proposalSignaturePubKey = obj.proposalSignaturePubKey;
   x.proposalSignaturePubKeySig = obj.proposalSignaturePubKeySig;
-  x.derivationStrategy = obj.derivationStrategy || 'BIP45';
+  x.derivationStrategy = obj.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
 
   return x;
 };
diff --git a/lib/model/wallet.js b/lib/model/wallet.js
index 545185b..4639073 100644
--- a/lib/model/wallet.js
+++ b/lib/model/wallet.js
@@ -29,8 +29,9 @@ Wallet.create = function(opts) {
   x.copayers = [];
   x.pubKey = opts.pubKey;
   x.network = opts.network;
+  x.derivationStrategy = opts.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
   x.addressManager = AddressManager.create({
-    derivationStrategy: opts.derivationStrategy || 'BIP45',
+    derivationStrategy: x.derivationStrategy,
   });
   x.scanStatus = null;
 
@@ -53,6 +54,7 @@ Wallet.fromObj = function(obj) {
   });
   x.pubKey = obj.pubKey;
   x.network = obj.network;
+  x.derivationStrategy = obj.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
   x.addressManager = AddressManager.fromObj(obj.addressManager);
   x.scanStatus = obj.scanStatus;
 
diff --git a/lib/server.js b/lib/server.js
index 2e4bec1..9f75a2d 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -220,8 +220,8 @@ WalletService.prototype.createWallet = function(opts, cb) {
   if (!_.contains(['livenet', 'testnet'], opts.network))
     return cb(new ClientError('Invalid network'));
 
-  opts.derivationStrategy = opts.derivationStrategy || 'BIP45';
-  if (!_.contains(['BIP44', 'BIP45'], opts.derivationStrategy))
+  opts.derivationStrategy = opts.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
+  if (!_.contains(_.values(WalletUtils.DERIVATION_STRATEGIES), opts.derivationStrategy))
     return cb(new ClientError('Invalid address derivation strategy'));
 
   try {
@@ -536,8 +536,8 @@ WalletService.prototype.joinWallet = function(opts, cb) {
   if (_.isEmpty(opts.name))
     return cb(new ClientError('Invalid copayer name'));
 
-  opts.derivationStrategy = opts.derivationStrategy || 'BIP45';
-  if (!_.contains(['BIP44', 'BIP45'], opts.derivationStrategy))
+  opts.derivationStrategy = opts.derivationStrategy || WalletUtils.DERIVATION_STRATEGIES.BIP45;
+  if (!_.contains(_.values(WalletUtils.DERIVATION_STRATEGIES), opts.derivationStrategy))
     return cb(new ClientError('Invalid address derivation strategy'));
 
   self.walletId = opts.walletId;