diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index cf8cffb3c..ffadb9aac 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -31,16 +31,16 @@ class CMainParams : public CChainParams {
 public:
     CMainParams() {
         strNetworkID = "main";
-        consensus.nSubsidySlowStartInterval = 5000;
-        consensus.nSubsidyHalvingInterval = 210000;
+        consensus.nSubsidySlowStartInterval = 20000;
+        consensus.nSubsidyHalvingInterval = 840000;
         consensus.nMajorityEnforceBlockUpgrade = 750;
         consensus.nMajorityRejectBlockOutdated = 950;
-        consensus.nMajorityWindow = 1000;
+        consensus.nMajorityWindow = 4000;
         // TODO generate harder genesis block
         //consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
-        consensus.nPowTargetSpacing = 10 * 60;
+        consensus.nPowTargetSpacing = 2.5 * 60;
         consensus.fPowAllowMinDifficultyBlocks = false;
         /** 
          * The message start string is designed to be unlikely to occur in normal data.
@@ -147,7 +147,7 @@ public:
         strNetworkID = "test";
         consensus.nMajorityEnforceBlockUpgrade = 51;
         consensus.nMajorityRejectBlockOutdated = 75;
-        consensus.nMajorityWindow = 100;
+        consensus.nMajorityWindow = 400;
         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.fPowAllowMinDifficultyBlocks = true;
         pchMessageStart[0] = 0x6d;
diff --git a/src/main.cpp b/src/main.cpp
index 9d25c91a9..1697a17dc 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1376,7 +1376,7 @@ bool ReadBlockFromDisk(CBlock& block, const CBlockIndex* pindex)
 
 CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams)
 {
-    CAmount nSubsidy = 50 * COIN;
+    CAmount nSubsidy = 12.5 * COIN;
 
     // Mining slow start
     // The subsidy is ramped up linearly, skipping the middle payout of
@@ -1397,7 +1397,7 @@ CAmount GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams)
     if (halvings >= 64)
         return 0;
 
-    // Subsidy is cut in half every 210,000 blocks which will occur approximately every 4 years.
+    // Subsidy is cut in half every 840,000 blocks which will occur approximately every 4 years.
     nSubsidy >>= halvings;
     return nSubsidy;
 }