diff --git a/src/psbt.cpp b/src/psbt.cpp
index ad4346d9ba..9931c9ef10 100644
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -12,6 +12,7 @@ PartiallySignedTransaction::PartiallySignedTransaction(const CMutableTransaction
 {
     inputs.resize(tx.vin.size(), PSBTInput(GetVersion()));
     outputs.resize(tx.vout.size(), PSBTOutput(GetVersion()));
+    CacheUnsignedTxPieces();
 }
 
 bool PartiallySignedTransaction::IsNull() const