diff --git a/lib/server.js b/lib/server.js
index b805aab..740107d 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -728,10 +728,10 @@ WalletService.prototype._selectTxInputs = function(txp, cb) {
           if (!bitcoreError) {
             txp.inputPaths = _.pluck(txp.inputs, 'path');
             txp.fee = bitcoreTx.getFee();
-            $.checkState(txp.fee < 1e8, 'Fees are too high!');
             return cb();
           }
         } catch (ex) {
+          log.error('Error building Bitcore transaction', ex);
           return cb(ex);
         }
       }
@@ -797,7 +797,7 @@ WalletService.prototype.createTx = function(opts, cb) {
     return cb(new ClientError('Required argument missing'));
 
   var feePerKb = opts.feePerKb || 10000;
-  if (feePerKb > 10000)
+  if (feePerKb < WalletUtils.MIN_FEE_PER_KB || feePerKb > WalletUtils.MAX_FEE_PER_KB)
     return cb(new ClientError('Invalid fee per KB value'));
 
   self._runLocked(cb, function(cb) {