# MutantHub mutant #4318: Logical operator mutation at validation.cpp:5713
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:5713-5713
# Review: APPROVED; outcome: KILLED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -5713,1 +5713,1 @@
-        if (!m_best_header || m_best_header->GetAncestor(snapshot_start_block->nHeight) != snapshot_start_block) {
+        if (!m_best_header && m_best_header->GetAncestor(snapshot_start_block->nHeight) != snapshot_start_block) {