# MutantHub mutant #4385: Arithmetic operator mutation at validation.cpp:6450
# Repository: bitcoin/bitcoin @ ddea9196493d3b8fd841a36a6c53efd85dac7a05
# File: src/validation.cpp:6450-6450
# Review: APPROVED; outcome: KILLED
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -6450,1 +6450,1 @@
-        prune_start = Assert(SnapshotBase())->nHeight + 1;
+        prune_start = Assert(SnapshotBase())->nHeight - 1;