diff --git a/src/miner.cpp b/src/miner.cpp
index b7447500d..d19faee7d 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -571,7 +571,7 @@ CBlockTemplate* CreateNewBlock(CPubKey _pk,const CScript& _scriptPubKeyIn, int32
         nLastBlockSize = nBlockSize;
         if ( ASSETCHAINS_ADAPTIVEPOW == 0 )
             blocktime = 1 + std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
-        else blocktime = 1 + std::max(pindexPrev->nTime+1, GetAdjustedTime());
+        else blocktime = 1 + std::max((int64_t)(pindexPrev->nTime+1), GetAdjustedTime());
         //pblock->nTime = blocktime + 1;
         pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());