# MutantHub mutant #4164: Logical operator mutation at validation.cpp:4708
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:4708-4708
# Review: APPROVED; outcome: SURVIVED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -4708,1 +4708,1 @@
-    if (chainstate.m_chain.Tip() == nullptr || chainstate.m_chain.Tip()->pprev == nullptr) {
+    if (chainstate.m_chain.Tip() == nullptr && chainstate.m_chain.Tip()->pprev == nullptr) {