# MutantHub mutant #4039: Relational operator mutation at validation.cpp:2433
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:2433-2433
# Review: APPROVED; outcome: KILLED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -2433,1 +2433,1 @@
-        } else if (m_chainman.m_best_header->GetAncestor(pindex->nHeight) != pindex) {
+        } else if (m_chainman.m_best_header->GetAncestor(pindex->nHeight) == pindex) {