# MutantHub mutant #1719: Relational operator mutation at interpreter.cpp:1647
# Repository: bitcoin/bitcoin @ 05e49b342faa1412266951429c135e9f5daa30c2
# File: src/script/interpreter.cpp:1647-1647
# Review: APPROVED; outcome: KILLED
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -1647,1 +1647,1 @@
-        if ((nHashType & 0x1f) != SIGHASH_SINGLE && (nHashType & 0x1f) != SIGHASH_NONE) {
+        if ((nHashType & 0x1f) == SIGHASH_SINGLE && (nHashType & 0x1f) != SIGHASH_NONE) {