# MutantHub mutant #473: Logical operator mutation at psbt.cpp:448
# Repository: bitcoin/bitcoin @ 2f72123f613f3aa1484ed06344039be78dedcb33
# File: src/psbt.cpp:448-448
# Review: APPROVED; outcome: SURVIVED
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -448,1 +448,1 @@
-    if (final_script_sig.empty() && !input.final_script_sig.empty()) final_script_sig = input.final_script_sig;
+    if (final_script_sig.empty() || !input.final_script_sig.empty()) final_script_sig = input.final_script_sig;