diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 5f400b265..778541751 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -66,6 +66,7 @@ public:
          */
         const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
         CMutableTransaction txNew;
+        txNew.nVersion = 1;
         txNew.vin.resize(1);
         txNew.vout.resize(1);
         txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
index e3e9061cc..393601d27 100644
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -74,6 +74,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
         pblock->nVersion = 1;
         pblock->nTime = chainActive.Tip()->GetMedianTimePast()+1;
         CMutableTransaction txCoinbase(pblock->vtx[0]);
+        txCoinbase.nVersion = 1;
         txCoinbase.vin[0].scriptSig = CScript();
         txCoinbase.vin[0].scriptSig.push_back(blockinfo[i].extranonce);
         txCoinbase.vin[0].scriptSig.push_back(chainActive.Height());