# MutantHub mutant #1590: Logical operator mutation at interpreter.cpp:1196
# Repository: bitcoin/bitcoin @ 05e49b342faa1412266951429c135e9f5daa30c2
# File: src/script/interpreter.cpp:1196-1196
# Review: APPROVED; outcome: KILLED
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -1196,1 +1196,1 @@
-                        if (!fSuccess && (flags & SCRIPT_VERIFY_NULLFAIL) && !ikey2 && stacktop(-1).size())
+                        if (!fSuccess || (flags & SCRIPT_VERIFY_NULLFAIL) && !ikey2 && stacktop(-1).size())