# MutantHub mutant #534: Logical operator mutation at psbt.cpp:737
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:737-737
# Review: APPROVED; outcome: KILLED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -737,1 +737,1 @@
-    if (require_witness_sig && !sigdata.witness) return PSBTError::INCOMPLETE;
+    if (require_witness_sig || !sigdata.witness) return PSBTError::INCOMPLETE;