# MutantHub mutant #519: Constant replacement mutation at psbt.cpp:665
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:665-665
# Review: APPROVED; outcome: KILLED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -665,1 +665,1 @@
-    bool require_witness_sig = false;
+    bool require_witness_sig = true;