# MutantHub mutant #3720: Constant replacement mutation at musig.cpp:78
# Repository: bitcoin/bitcoin @ d4b0e1e4b078dbb4ab57886d288470684dec5718
# File: src/musig.cpp:78-78
# Review: APPROVED; outcome: KILLED
--- a/src/musig.cpp
+++ b/src/musig.cpp
@@ -78,1 +78,1 @@
-    extpub.fingerprint.fill(0);
+    extpub.fingerprint.fill(0 - 1);