diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 42b4eac99a3ca..a7f40e3fe3b54 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -64,6 +64,7 @@ class CMainParams : public CChainParams {
 
         vSeeds.push_back(CDNSSeedData("darkcoin.io", "dnsseed.darkcoin.io"));
         vSeeds.push_back(CDNSSeedData("darkcoin.qa", "dnsseed.darkcoin.qa"));
+        vSeeds.push_back(CDNSSeedData("masternode.io", "dnsseed.masternode.io"));
 
         base58Prefixes[PUBKEY_ADDRESS] = list_of(76); // Darkcoin addresses start with X
         base58Prefixes[SCRIPT_ADDRESS] = list_of(5);
@@ -101,7 +102,7 @@ static CMainParams mainParams;
 
 
 //
-// Testnet (v4)
+// Testnet (v3)
 //
 class CTestNetParams : public CMainParams {
 public:
@@ -130,8 +131,9 @@ class CTestNetParams : public CMainParams {
         vSeeds.clear();
         vSeeds.push_back(CDNSSeedData("darkcoin.io", "testnet-seed.darkcoin.io"));
         vSeeds.push_back(CDNSSeedData("darkcoin.qa", "testnet-seed.darkcoin.qa"));
+        vSeeds.push_back(CDNSSeedData("masternode.io", "test.dnsseed.masternode.io"));
 
-        base58Prefixes[PUBKEY_ADDRESS] = list_of(111); // Testnet v4 addresses
+        base58Prefixes[PUBKEY_ADDRESS] = list_of(111); // Testnet v3 addresses
         base58Prefixes[SCRIPT_ADDRESS] = list_of(196);
         base58Prefixes[SECRET_KEY]     = list_of(239);
         base58Prefixes[EXT_PUBLIC_KEY] = list_of(0x04)(0x35)(0x87)(0xCF);
diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index 735dbdf77b680..923365df31e34 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -68,8 +68,8 @@ namespace Checkpoints
     static const CCheckpointData dataTestnet = {
         &mapCheckpointsTestnet,
         1405699509,
-        20,
-        300
+        201,
+        500
     };
 
     static MapCheckpoints mapCheckpointsRegtest =
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index 0fd35fa2aad33..dd077d9be2777 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -55,7 +55,7 @@ class ClientModel : public QObject
     double getVerificationProgress() const;
     QDateTime getLastBlockDate() const;
 
-    //! Return network (main, testnet4, regtest)
+    //! Return network (main, testnet3, regtest)
     QString getNetworkName() const;
     //! Return true if core is doing initial block download
     bool inInitialBlockDownload() const;
diff --git a/src/rpcblockchain.cpp b/src/rpcblockchain.cpp
index c4e2b218b560f..0038da6ad6c61 100644
--- a/src/rpcblockchain.cpp
+++ b/src/rpcblockchain.cpp
@@ -441,7 +441,7 @@ Value getblockchaininfo(const Array& params, bool fHelp)
             "Returns an object containing various state info regarding block chain processing.\n"
             "\nResult:\n"
             "{\n"
-            "  \"chain\": \"xxxx\",        (string) current chain (main, testnet4, regtest)\n"
+            "  \"chain\": \"xxxx\",        (string) current chain (main, testnet3, regtest)\n"
             "  \"blocks\": xxxxxx,         (numeric) the current number of blocks processed in the server\n"
             "  \"bestblockhash\": \"...\", (string) the hash of the currently best block\n"
             "  \"difficulty\": xxxxxx,     (numeric) the current difficulty\n"