# MutantHub mutant #421: Logical operator mutation at psbt.cpp:294
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:294-294
# Review: APPROVED; outcome: SURVIVED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -294,1 +294,1 @@
-    return !non_witness_utxo && witness_utxo.IsNull() && partial_sigs.empty() && unknown.empty() && hd_keypaths.empty() && redeem_script.empty() && witness_script.empty();
+    return !non_witness_utxo || witness_utxo.IsNull() && partial_sigs.empty() && unknown.empty() && hd_keypaths.empty() && redeem_script.empty() && witness_script.empty();