# MutantHub mutant #529: Logical operator mutation at psbt.cpp:721
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:721-721
# Review: APPROVED; outcome: SURVIVED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -721,1 +721,1 @@
-            if (sig.size() != 65 || sig.back() != sighash) return PSBTError::SIGHASH_MISMATCH;
+            if (sig.size() != 65 && sig.back() != sighash) return PSBTError::SIGHASH_MISMATCH;