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-rw-r--r--src/script/sign.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index 0e6864d547..8afbe9ebed 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -388,7 +388,7 @@ bool SignSignature(const SigningProvider &provider, const CScript& fromPubKey, C
bool SignSignature(const SigningProvider &provider, const CTransaction& txFrom, CMutableTransaction& txTo, unsigned int nIn, int nHashType)
{
assert(nIn < txTo.vin.size());
- CTxIn& txin = txTo.vin[nIn];
+ const CTxIn& txin = txTo.vin[nIn];
assert(txin.prevout.n < txFrom.vout.size());
const CTxOut& txout = txFrom.vout[txin.prevout.n];