# MutantHub mutant #4091: Relational operator mutation at validation.cpp:3857
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:3857-3857
# Review: APPROVED; outcome: SURVIVED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -3857,1 +3857,1 @@
-                std::ranges::any_of(m_chainstates, [&](const auto& cs) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return cs->SnapshotBase() == pindexNew; }))) {
+                std::ranges::any_of(m_chainstates, [&](const auto& cs) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return cs->SnapshotBase() != pindexNew; }))) {