diff --git a/src/validation.cpp b/src/validation.cpp
index d1b080cc95..1d6454e1ae 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1202,7 +1202,7 @@ void UpdateCoins(const CTransaction& tx, CCoinsViewCache& inputs, int nHeight)
 bool CScriptCheck::operator()() {
     const CScript &scriptSig = ptxTo->vin[nIn].scriptSig;
     const CScriptWitness *witness = &ptxTo->vin[nIn].scriptWitness;
-    return VerifyScript(scriptSig, out.scriptPubKey, witness, nFlags, CachingTransactionSignatureChecker(ptxTo, nIn, out.nValue, cacheStore, *txdata), &error);
+    return VerifyScript(scriptSig, m_tx_out.scriptPubKey, witness, nFlags, CachingTransactionSignatureChecker(ptxTo, nIn, m_tx_out.nValue, cacheStore, *txdata), &error);
 }
 
 int GetSpendHeight(const CCoinsViewCache& inputs)
diff --git a/src/validation.h b/src/validation.h
index 69751b8c68..9cd9fe536b 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -355,7 +355,7 @@ bool CheckSequenceLocks(const CTransaction &tx, int flags, LockPoints* lp = null
 class CScriptCheck
 {
 private:
-    CTxOut out;
+    CTxOut m_tx_out;
     const CTransaction *ptxTo;
     unsigned int nIn;
     unsigned int nFlags;
@@ -366,13 +366,13 @@ class CScriptCheck
 public:
     CScriptCheck(): ptxTo(nullptr), nIn(0), nFlags(0), cacheStore(false), error(SCRIPT_ERR_UNKNOWN_ERROR) {}
     CScriptCheck(const CTxOut& outIn, const CTransaction& txToIn, unsigned int nInIn, unsigned int nFlagsIn, bool cacheIn, PrecomputedTransactionData* txdataIn) :
-        out(outIn), ptxTo(&txToIn), nIn(nInIn), nFlags(nFlagsIn), cacheStore(cacheIn), error(SCRIPT_ERR_UNKNOWN_ERROR), txdata(txdataIn) { }
+        m_tx_out(outIn), ptxTo(&txToIn), nIn(nInIn), nFlags(nFlagsIn), cacheStore(cacheIn), error(SCRIPT_ERR_UNKNOWN_ERROR), txdata(txdataIn) { }
 
     bool operator()();
 
     void swap(CScriptCheck &check) {
         std::swap(ptxTo, check.ptxTo);
-        std::swap(out, check.out);
+        std::swap(m_tx_out, check.m_tx_out);
         std::swap(nIn, check.nIn);
         std::swap(nFlags, check.nFlags);
         std::swap(cacheStore, check.cacheStore);