diff --git a/lib/server.js b/lib/server.js
index 3944a71..255acd4 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -2181,11 +2181,13 @@ WalletService.prototype.signTx = function(opts, cb) {
 
       if (!txp.sign(self.copayerId, opts.signatures, copayer.xPubKey)) {
         log.warn('Error signing transaction (BAD_SIGNATURES)');
-        log.warn('Wallet id: ', self.walletId);
-        log.warn('Copayer id: ', self.copayerId);
-        log.warn('Client version: ', self.clientVersion);
-        log.warn('Arguments: ', JSON.stringify(opts));
-        log.warn('Transaction proposal: ', JSON.stringify(txp));
+        log.warn('Wallet id:', self.walletId);
+        log.warn('Copayer id:', self.copayerId);
+        log.warn('Client version:', self.clientVersion);
+        log.warn('Arguments:', JSON.stringify(opts));
+        log.warn('Transaction proposal:', JSON.stringify(txp));
+        var raw = txp.getBitcoreTx().uncheckedSerialize();
+        log.warn('Raw tx:', raw);
         return cb(Errors.BAD_SIGNATURES);
       }