# MutantHub mutant #521: Logical operator mutation at psbt.cpp:697
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:697-697
# Review: APPROVED; outcome: KILLED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -697,1 +697,1 @@
-    if (input.sighash_type && input.sighash_type != sighash) {
+    if (input.sighash_type || input.sighash_type != sighash) {