# MutantHub mutant #4190: Arithmetic operator mutation at validation.cpp:4802
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:4802-4802
# Review: APPROVED; outcome: SURVIVED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -4802,1 +4802,1 @@
-    int block_count = chainstate.m_chain.Height() - pindex->nHeight;
+    int block_count = chainstate.m_chain.Height() + pindex->nHeight;