# MutantHub mutant #215: Arithmetic operator mutation at tx_verify.cpp:202
# Repository: bitcoin/bitcoin @ ca45461ddb2421b4267dad0b7d7bcec88c07eba4
# File: src/consensus/tx_verify.cpp:202-202
# Review: APPROVED; outcome: KILLED
--- a/src/consensus/tx_verify.cpp
+++ b/src/consensus/tx_verify.cpp
@@ -202,1 +202,1 @@
-    const CAmount txfee_aux = nValueIn - value_out;
+    const CAmount txfee_aux = nValueIn + value_out;