diff --git a/jmclient/jmclient/taker.py b/jmclient/jmclient/taker.py
index a460e38..46f4b08 100644
--- a/jmclient/jmclient/taker.py
+++ b/jmclient/jmclient/taker.py
@@ -355,7 +355,8 @@ class Taker(object):
         if self.my_change_addr:
             #Estimate fee per choice of next/3/6 blocks targetting.
             estimated_fee = estimate_tx_fee(
-                len(sum(self.utxos.values(), [])), len(self.outputs) + 2)
+                len(sum(self.utxos.values(), [])), len(self.outputs) + 2,
+                txtype=self.wallet.get_txtype())
             jlog.info("Based on initial guess: " + str(self.total_txfee) +
                      ", we estimated a miner fee of: " + str(estimated_fee))
             #reset total
diff --git a/scripts/sendpayment.py b/scripts/sendpayment.py
index 9850669..b352ec8 100644
--- a/scripts/sendpayment.py
+++ b/scripts/sendpayment.py
@@ -114,9 +114,10 @@ def main():
 
     # Dynamically estimate a realistic fee if it currently is the default value.
     # At this point we do not know even the number of our own inputs, so
-    # we guess conservatively with 2 inputs and 2 outputs each
+    # we guess conservatively with 2 inputs and 2 outputs each.
     if options.txfee == -1:
-        options.txfee = max(options.txfee, estimate_tx_fee(2, 2))
+        options.txfee = max(options.txfee, estimate_tx_fee(2, 2,
+                                                           txtype="p2sh-p2wpkh"))
         log.debug("Estimated miner/tx fee for each cj participant: " + str(
             options.txfee))
     assert (options.txfee >= 0)