# MutantHub mutant #527: Relational operator mutation at psbt.cpp:714
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:714-714
# Review: APPROVED; outcome: KILLED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -714,1 +714,1 @@
-            if (sig.size() != 64) return PSBTError::SIGHASH_MISMATCH;
+            if (sig.size() == 64) return PSBTError::SIGHASH_MISMATCH;