# MutantHub mutant #3855: Constant replacement mutation at blockstorage.cpp:1039
# Repository: bitcoin/bitcoin @ 4fe28722a572793da7614734a0c9cc8e1adc751a
# File: src/node/blockstorage.cpp:1039-1039
# Review: APPROVED; outcome: SURVIVED
--- a/src/node/blockstorage.cpp
+++ b/src/node/blockstorage.cpp
@@ -1039,1 +1039,1 @@
-            cursor.undo_height = block.nHeight;
+            cursor.undo_height = true;