# MutantHub mutant #4207: Relational operator mutation at validation.cpp:4874
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:4874-4874
# Review: APPROVED; outcome: KILLED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -4874,1 +4874,1 @@
-    if (hashHeads.size() != 2) {
+    if (hashHeads.size() == 2) {