# MutantHub mutant #690: Arithmetic operator mutation at descriptor.cpp:1177
# Repository: bitcoin/bitcoin @ 1aafd49077041e874d6b5f114927bc37e5b85d71
# File: src/script/descriptor.cpp:1177-1177
# Review: APPROVED; outcome: KILLED
--- a/src/script/descriptor.cpp
+++ b/src/script/descriptor.cpp
@@ -1177,1 +1177,1 @@
-        return 1 + (m_xonly ? 32 : m_pubkey_args[0]->GetSize()) + 1;
+        return 1 - (m_xonly ? 32 : m_pubkey_args[0]->GetSize()) + 1;