diff --git a/python/src/trezorlib/btc.py b/python/src/trezorlib/btc.py
index 2d54694946..0570ad643d 100644
--- a/python/src/trezorlib/btc.py
+++ b/python/src/trezorlib/btc.py
@@ -265,7 +265,7 @@ def sign_tx(
             msg = copy_tx_meta(current_tx)
             res = client.call(messages.TxAck(tx=msg))
 
-        elif res.request_type == R.TXINPUT:
+        elif res.request_type in (R.TXINPUT, R.TXORIGINPUT):
             msg = messages.TransactionType()
             msg.inputs = [current_tx.inputs[res.details.request_index]]
             res = client.call(messages.TxAck(tx=msg))
@@ -279,6 +279,11 @@ def sign_tx(
 
             res = client.call(messages.TxAck(tx=msg))
 
+        elif res.request_type == R.TXORIGOUTPUT:
+            msg = messages.TransactionType()
+            msg.outputs = [current_tx.outputs[res.details.request_index]]
+            res = client.call(messages.TxAck(tx=msg))
+
         elif res.request_type == R.TXEXTRADATA:
             o, l = res.details.extra_data_offset, res.details.extra_data_len
             msg = messages.TransactionType()