diff --git a/lib/server.js b/lib/server.js
index 60856c1..bdad5ba 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -750,7 +750,7 @@ WalletService.prototype._selectTxInputs = function(txp, cb) {
 
 WalletService.prototype._canCreateTx = function(copayerId, cb) {
   var self = this;
-  self.storage.fetchLastTxs(self.walletId, copayerId, 5, function(err, txs) {
+  self.storage.fetchLastTxs(self.walletId, copayerId, 5 + WalletService.backoffOffset, function(err, txs) {
     if (err) return cb(err);
 
     if (!txs.length)