diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 75a14c6013..86d80629eb 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -112,6 +112,9 @@ public:
         nRPCPort = 8332;
         bnProofOfWorkLimit = ~uint256(0) >> 32;
         nSubsidyHalvingInterval = 210000;
+        nEnforceBlockUpgradeMajority = 750;
+        nRejectBlockOutdatedMajority = 950;
+        nToCheckBlockUpgradeMajority = 1000;
         nMinerThreads = 0;
 
         // Build the genesis block. Note that the output of the genesis coinbase cannot
@@ -199,6 +202,9 @@ public:
         vAlertPubKey = ParseHex("04302390343f91cc401d56d68b123028bf52e5fca1939df127f63c6467cdf9c8e2c14b61104cf817d0b780da337893ecc4aaff1309e536162dabbdb45200ca2b0a");
         nDefaultPort = 18333;
         nRPCPort = 18332;
+        nEnforceBlockUpgradeMajority = 51;
+        nRejectBlockOutdatedMajority = 75;
+        nToCheckBlockUpgradeMajority = 100;
         strDataDir = "testnet3";
 
         // Modify the testnet genesis block so the timestamp is valid for a later start.
@@ -234,6 +240,9 @@ public:
         pchMessageStart[2] = 0xb5;
         pchMessageStart[3] = 0xda;
         nSubsidyHalvingInterval = 150;
+        nEnforceBlockUpgradeMajority = 750;
+        nRejectBlockOutdatedMajority = 950;
+        nToCheckBlockUpgradeMajority = 1000;
         nMinerThreads = 1;
         bnProofOfWorkLimit = ~uint256(0) >> 1;
         genesis.nTime = 1296688602;
diff --git a/src/chainparams.h b/src/chainparams.h
index f0c90bf50f..f400907d73 100644
--- a/src/chainparams.h
+++ b/src/chainparams.h
@@ -57,6 +57,11 @@ public:
     int GetDefaultPort() const { return nDefaultPort; }
     const uint256& ProofOfWorkLimit() const { return bnProofOfWorkLimit; }
     int SubsidyHalvingInterval() const { return nSubsidyHalvingInterval; }
+    /* Used to check majorities for block version upgrade */
+    int EnforceBlockUpgradeMajority() const { return nEnforceBlockUpgradeMajority; }
+    int RejectBlockOutdatedMajority() const { return nRejectBlockOutdatedMajority; }
+    int ToCheckBlockUpgradeMajority() const { return nToCheckBlockUpgradeMajority; }
+
     /* Used if GenerateBitcoins is called with a negative number of threads */
     int DefaultMinerThreads() const { return nMinerThreads; }
     virtual const CBlock& GenesisBlock() const = 0;
@@ -85,6 +90,9 @@ protected:
     int nRPCPort;
     uint256 bnProofOfWorkLimit;
     int nSubsidyHalvingInterval;
+    int nEnforceBlockUpgradeMajority;
+    int nRejectBlockOutdatedMajority;
+    int nToCheckBlockUpgradeMajority;
     string strDataDir;
     int nMinerThreads;
     vector<CDNSSeedData> vSeeds;
diff --git a/src/main.cpp b/src/main.cpp
index 30fa9c6d70..e6519864d8 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2469,14 +2469,11 @@ bool AcceptBlockHeader(CBlockHeader& block, CValidationState& state, CBlockIndex
             return state.DoS(100, error("AcceptBlock() : forked chain older than last checkpoint (height %d)", nHeight));
 
         // Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
-        if (block.nVersion < 2)
+        if (block.nVersion < 2 && 
+            CBlockIndex::IsSuperMajority(2, pindexPrev, Params().RejectBlockOutdatedMajority()))
         {
-            if ((!TestNet() && CBlockIndex::IsSuperMajority(2, pindexPrev, 950, 1000)) ||
-                (TestNet() && CBlockIndex::IsSuperMajority(2, pindexPrev, 75, 100)))
-            {
-                return state.Invalid(error("AcceptBlock() : rejected nVersion=1 block"),
-                                     REJECT_OBSOLETE, "bad-version");
-            }
+            return state.Invalid(error("AcceptBlock() : rejected nVersion=1 block"),
+                                 REJECT_OBSOLETE, "bad-version");
         }
     }
 
@@ -2517,19 +2514,15 @@ bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex** ppindex,
         }
 
     // Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
-    if (block.nVersion >= 2)
+    // if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet):
+    if (block.nVersion >= 2 && 
+        CBlockIndex::IsSuperMajority(2, pindex->pprev, Params().EnforceBlockUpgradeMajority()))
     {
-        // if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet):
-        if ((!TestNet() && CBlockIndex::IsSuperMajority(2, pindex->pprev, 750, 1000)) ||
-            (TestNet() && CBlockIndex::IsSuperMajority(2, pindex->pprev, 51, 100)))
-        {
-            CScript expect = CScript() << nHeight;
-            if (block.vtx[0].vin[0].scriptSig.size() < expect.size() ||
-                !std::equal(expect.begin(), expect.end(), block.vtx[0].vin[0].scriptSig.begin())) {
-                pindex->nStatus |= BLOCK_FAILED_VALID;
-                return state.DoS(100, error("AcceptBlock() : block height mismatch in coinbase"),
-                                 REJECT_INVALID, "bad-cb-height");
-            }
+        CScript expect = CScript() << nHeight;
+        if (block.vtx[0].vin[0].scriptSig.size() < expect.size() ||
+            !std::equal(expect.begin(), expect.end(), block.vtx[0].vin[0].scriptSig.begin())) {
+            pindex->nStatus |= BLOCK_FAILED_VALID;
+            return state.DoS(100, error("AcceptBlock() : block height mismatch in coinbase"), REJECT_INVALID, "bad-cb-height");
         }
     }
 
@@ -2563,8 +2556,9 @@ bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex** ppindex,
     return true;
 }
 
-bool CBlockIndex::IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned int nRequired, unsigned int nToCheck)
+bool CBlockIndex::IsSuperMajority(int minVersion, const CBlockIndex* pstart, unsigned int nRequired)
 {
+    unsigned int nToCheck = Params().ToCheckBlockUpgradeMajority();
     unsigned int nFound = 0;
     for (unsigned int i = 0; i < nToCheck && nFound < nRequired && pstart != NULL; i++)
     {
diff --git a/src/main.h b/src/main.h
index 42cf4a0861..58515b44b9 100644
--- a/src/main.h
+++ b/src/main.h
@@ -848,10 +848,11 @@ public:
 
     /**
      * Returns true if there are nRequired or more blocks of minVersion or above
-     * in the last nToCheck blocks, starting at pstart and going backwards.
+     * in the last Params().ToCheckBlockUpgradeMajority() blocks, starting at pstart 
+     * and going backwards.
      */
     static bool IsSuperMajority(int minVersion, const CBlockIndex* pstart,
-                                unsigned int nRequired, unsigned int nToCheck);
+                                unsigned int nRequired);
 
     std::string ToString() const
     {