diff --git a/src/coins.cpp b/src/coins.cpp
index 48155a5df..c8bd65a9d 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -41,7 +41,7 @@ bool CCoins::Spend(uint32_t nPos)
     return true;
 }
 bool CCoinsView::GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const { return false; }
-bool CCoinsView::GetSerial(const uint256 &serial) const { return false; }
+bool CCoinsView::GetNullifier(const uint256 &serial) const { return false; }
 bool CCoinsView::GetCoins(const uint256 &txid, CCoins &coins) const { return false; }
 bool CCoinsView::HaveCoins(const uint256 &txid) const { return false; }
 uint256 CCoinsView::GetBestBlock() const { return uint256(); }
@@ -57,7 +57,7 @@ bool CCoinsView::GetStats(CCoinsStats &stats) const { return false; }
 CCoinsViewBacked::CCoinsViewBacked(CCoinsView *viewIn) : base(viewIn) { }
 
 bool CCoinsViewBacked::GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const { return base->GetAnchorAt(rt, tree); }
-bool CCoinsViewBacked::GetSerial(const uint256 &serial) const { return base->GetSerial(serial); }
+bool CCoinsViewBacked::GetNullifier(const uint256 &serial) const { return base->GetNullifier(serial); }
 bool CCoinsViewBacked::GetCoins(const uint256 &txid, CCoins &coins) const { return base->GetCoins(txid, coins); }
 bool CCoinsViewBacked::HaveCoins(const uint256 &txid) const { return base->HaveCoins(txid); }
 uint256 CCoinsViewBacked::GetBestBlock() const { return base->GetBestBlock(); }
@@ -128,13 +128,13 @@ bool CCoinsViewCache::GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tr
     return true;
 }
 
-bool CCoinsViewCache::GetSerial(const uint256 &serial) const {
+bool CCoinsViewCache::GetNullifier(const uint256 &serial) const {
     CSerialsMap::iterator it = cacheSerials.find(serial);
     if (it != cacheSerials.end())
         return it->second.entered;
 
     CSerialsCacheEntry entry;
-    bool tmp = base->GetSerial(serial);
+    bool tmp = base->GetNullifier(serial);
     entry.entered = tmp;
 
     cacheSerials.insert(std::make_pair(serial, entry));
@@ -398,7 +398,7 @@ bool CCoinsViewCache::HaveJoinSplitRequirements(const CTransaction& tx) const
     {
         BOOST_FOREACH(const uint256& serial, pour.nullifiers)
         {
-            if (GetSerial(serial)) {
+            if (GetNullifier(serial)) {
                 // If the serial is set, this transaction
                 // double-spends!
                 return false;
diff --git a/src/coins.h b/src/coins.h
index 0e2cfb6d5..219583b10 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -347,7 +347,7 @@ public:
     virtual bool GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const;
 
     //! Determine whether a serial is spent or not
-    virtual bool GetSerial(const uint256 &serial) const;
+    virtual bool GetNullifier(const uint256 &serial) const;
 
     //! Retrieve the CCoins (unspent transaction outputs) for a given txid
     virtual bool GetCoins(const uint256 &txid, CCoins &coins) const;
@@ -387,7 +387,7 @@ protected:
 public:
     CCoinsViewBacked(CCoinsView *viewIn);
     bool GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const;
-    bool GetSerial(const uint256 &serial) const;
+    bool GetNullifier(const uint256 &serial) const;
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
     bool HaveCoins(const uint256 &txid) const;
     uint256 GetBestBlock() const;
@@ -451,7 +451,7 @@ public:
 
     // Standard CCoinsView methods
     bool GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const;
-    bool GetSerial(const uint256 &serial) const;
+    bool GetNullifier(const uint256 &serial) const;
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
     bool HaveCoins(const uint256 &txid) const;
     uint256 GetBestBlock() const;
diff --git a/src/test/coins_tests.cpp b/src/test/coins_tests.cpp
index a492dcb73..40c0a6cc0 100644
--- a/src/test/coins_tests.cpp
+++ b/src/test/coins_tests.cpp
@@ -47,7 +47,7 @@ public:
         }
     }
 
-    bool GetSerial(const uint256 &serial) const
+    bool GetNullifier(const uint256 &serial) const
     {
         std::map<uint256, bool>::const_iterator it = mapSerials_.find(serial);
 
@@ -170,21 +170,21 @@ BOOST_AUTO_TEST_CASE(serials_test)
 
     uint256 myserial = GetRandHash();
 
-    BOOST_CHECK(!cache.GetSerial(myserial));
+    BOOST_CHECK(!cache.GetNullifier(myserial));
     cache.SetSerial(myserial, true);
-    BOOST_CHECK(cache.GetSerial(myserial));
+    BOOST_CHECK(cache.GetNullifier(myserial));
     cache.Flush();
 
     CCoinsViewCacheTest cache2(&base);
 
-    BOOST_CHECK(cache2.GetSerial(myserial));
+    BOOST_CHECK(cache2.GetNullifier(myserial));
     cache2.SetSerial(myserial, false);
-    BOOST_CHECK(!cache2.GetSerial(myserial));
+    BOOST_CHECK(!cache2.GetNullifier(myserial));
     cache2.Flush();
 
     CCoinsViewCacheTest cache3(&base);
 
-    BOOST_CHECK(!cache3.GetSerial(myserial));
+    BOOST_CHECK(!cache3.GetNullifier(myserial));
 }
 
 BOOST_AUTO_TEST_CASE(anchors_flush_test)
diff --git a/src/txdb.cpp b/src/txdb.cpp
index 5e971a827..b7bd0e742 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -81,7 +81,7 @@ bool CCoinsViewDB::GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree)
     return read;
 }
 
-bool CCoinsViewDB::GetSerial(const uint256 &serial) const {
+bool CCoinsViewDB::GetNullifier(const uint256 &serial) const {
     bool spent = false;
     bool read = db.Read(make_pair(DB_SERIAL, serial), spent);
 
diff --git a/src/txdb.h b/src/txdb.h
index 8e6782141..f24b48abb 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -35,7 +35,7 @@ public:
     CCoinsViewDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
 
     bool GetAnchorAt(const uint256 &rt, ZCIncrementalMerkleTree &tree) const;
-    bool GetSerial(const uint256 &serial) const;
+    bool GetNullifier(const uint256 &serial) const;
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
     bool HaveCoins(const uint256 &txid) const;
     uint256 GetBestBlock() const;
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index 34b39650e..6f38c0e9f 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -319,7 +319,7 @@ void CTxMemPool::check(const CCoinsViewCache *pcoins) const
 
         BOOST_FOREACH(const JSDescription &pour, tx.vjoinsplit) {
             BOOST_FOREACH(const uint256 &serial, pour.nullifiers) {
-                assert(!pcoins->GetSerial(serial));
+                assert(!pcoins->GetNullifier(serial));
             }
 
             ZCIncrementalMerkleTree tree;
@@ -484,11 +484,11 @@ bool CTxMemPool::HasNoInputsOf(const CTransaction &tx) const
 
 CCoinsViewMemPool::CCoinsViewMemPool(CCoinsView *baseIn, CTxMemPool &mempoolIn) : CCoinsViewBacked(baseIn), mempool(mempoolIn) { }
 
-bool CCoinsViewMemPool::GetSerial(const uint256 &serial) const {
+bool CCoinsViewMemPool::GetNullifier(const uint256 &serial) const {
     if (mempool.mapSerials.count(serial))
         return true;
 
-    return base->GetSerial(serial);
+    return base->GetNullifier(serial);
 }
 
 bool CCoinsViewMemPool::GetCoins(const uint256 &txid, CCoins &coins) const {
diff --git a/src/txmempool.h b/src/txmempool.h
index 972daa722..f2ff7ffd2 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -177,7 +177,7 @@ protected:
 
 public:
     CCoinsViewMemPool(CCoinsView *baseIn, CTxMemPool &mempoolIn);
-    bool GetSerial(const uint256 &txid) const;
+    bool GetNullifier(const uint256 &txid) const;
     bool GetCoins(const uint256 &txid, CCoins &coins) const;
     bool HaveCoins(const uint256 &txid) const;
 };