diff --git a/src/main.cpp b/src/main.cpp
index 92a38f230fbdd..090d1b2b1b92e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1744,7 +1744,7 @@ void static InvalidBlockFound(CBlockIndex *pindex, const CValidationState &state
     }
 }
 
-void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, CTxUndo &txundo, int nHeight)
+void UpdateCoins(const CTransaction& tx, CCoinsViewCache& inputs, CTxUndo &txundo, int nHeight)
 {
     // mark inputs spent
     if (!tx.IsCoinBase()) {
@@ -1770,10 +1770,10 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach
     inputs.ModifyNewCoins(tx.GetHash(), tx.IsCoinBase())->FromTx(tx, nHeight);
 }
 
-void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, int nHeight)
+void UpdateCoins(const CTransaction& tx, CCoinsViewCache& inputs, int nHeight)
 {
     CTxUndo txundo;
-    UpdateCoins(tx, state, inputs, txundo, nHeight);
+    UpdateCoins(tx, inputs, txundo, nHeight);
 }
 
 bool CScriptCheck::operator()() {
@@ -2385,7 +2385,7 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
         if (i > 0) {
             blockundo.vtxundo.push_back(CTxUndo());
         }
-        UpdateCoins(tx, state, view, i == 0 ? undoDummy : blockundo.vtxundo.back(), pindex->nHeight);
+        UpdateCoins(tx, view, i == 0 ? undoDummy : blockundo.vtxundo.back(), pindex->nHeight);
 
         vPos.push_back(std::make_pair(tx.GetHash(), pos));
         pos.nTxOffset += ::GetSerializeSize(tx, SER_DISK, CLIENT_VERSION);
diff --git a/src/main.h b/src/main.h
index bdf7f5a6874c5..3cc16fd8f4b74 100644
--- a/src/main.h
+++ b/src/main.h
@@ -338,7 +338,7 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
                  unsigned int flags, bool cacheStore, std::vector<CScriptCheck> *pvChecks = NULL);
 
 /** Apply the effects of this transaction on the UTXO set represented by view */
-void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCache &inputs, int nHeight);
+void UpdateCoins(const CTransaction& tx, CCoinsViewCache& inputs, int nHeight);
 
 /** Context-independent validity checks */
 bool CheckTransaction(const CTransaction& tx, CValidationState& state);
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
index 129ce04e0bca1..e6923265592d7 100644
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -297,8 +297,7 @@ BOOST_AUTO_TEST_CASE(updatecoins_simulation_test)
             CCoins &coins = result[tx.GetHash()];
             coins.FromTx(tx, height);
 
-            CValidationState dummy;
-            UpdateCoins(tx, dummy, *(stack.back()), height);
+            UpdateCoins(tx, *(stack.back()), height);
         }
 
         // Once every 1000 iterations and at the end, verify the full cache.
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index a6070f5264955..aa5df6ca4e40e 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -720,7 +720,7 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
         else {
             CValidationState state;
             assert(CheckInputs(tx, state, mempoolDuplicate, false, 0, false, NULL));
-            UpdateCoins(tx, state, mempoolDuplicate, 1000000);
+            UpdateCoins(tx, mempoolDuplicate, 1000000);
         }
     }
     unsigned int stepsSinceLastRemove = 0;
@@ -734,7 +734,7 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
             assert(stepsSinceLastRemove < waitingOnDependants.size());
         } else {
             assert(CheckInputs(entry->GetTx(), state, mempoolDuplicate, false, 0, false, NULL));
-            UpdateCoins(entry->GetTx(), state, mempoolDuplicate, 1000000);
+            UpdateCoins(entry->GetTx(), mempoolDuplicate, 1000000);
             stepsSinceLastRemove = 0;
         }
     }