diff --git a/lib/model/copayer.js b/lib/model/copayer.js
index bccdc81..d7cce72 100644
--- a/lib/model/copayer.js
+++ b/lib/model/copayer.js
@@ -37,7 +37,8 @@ Copayer.create = function(opts) {
   }];
 
   x.addressManager = AddressManager.create({
-    copayerIndex: opts.copayerIndex
+    derivationStrategy: 'BIP45',
+    copayerIndex: opts.copayerIndex,
   });
 
   x.customData = opts.customData;
diff --git a/lib/model/wallet.js b/lib/model/wallet.js
index 3fc507c..5b632a6 100644
--- a/lib/model/wallet.js
+++ b/lib/model/wallet.js
@@ -29,7 +29,9 @@ Wallet.create = function(opts) {
   x.copayers = [];
   x.pubKey = opts.pubKey;
   x.network = opts.network;
-  x.addressManager = AddressManager.create();
+  x.addressManager = AddressManager.create({
+    derivationStrategy: 'BIP45',
+  });
   x.scanStatus = null;
 
   return x;
diff --git a/lib/server.js b/lib/server.js
index df018f3..68ce60f 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -941,7 +941,10 @@ WalletService.prototype._selectTxInputs = function(txp, utxosToExclude, cb) {
   self.getUtxos({}, function(err, utxos) {
     if (err) return cb(err);
 
-    var excludeIndex = _.reduce(utxosToExclude, function(res, val) { res[val] = val; return res; }, {});
+    var excludeIndex = _.reduce(utxosToExclude, function(res, val) {
+      res[val] = val;
+      return res;
+    }, {});
 
     utxos = _.reject(utxos, function(utxo) {
       return excludeIndex[utxo.txid + ":" + utxo.vout];
@@ -1817,10 +1820,12 @@ WalletService.prototype.scan = function(opts, cb) {
           });
           if (opts.includeCopayerBranches) {
             _.each(wallet.copayers, function(copayer) {
-              derivators.push({
-                derive: _.bind(copayer.createAddress, copayer, wallet, isChange),
-                rewind: _.bind(copayer.addressManager.rewindIndex, copayer.addressManager, isChange),
-              });
+              if (copayer.addressManager.supportsDerivation()) {
+                derivators.push({
+                  derive: _.bind(copayer.createAddress, copayer, wallet, isChange),
+                  rewind: _.bind(copayer.addressManager.rewindIndex, copayer.addressManager, isChange),
+                });
+              }
             });
           }
         });