diff --git a/src/main.cpp b/src/main.cpp
index 375096199..ac0d8501d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -817,7 +817,7 @@ bool IsFinalTx(uint32_t *expiredp,const CTransaction &tx, int nBlockHeight, int6
         return true;
     if ( ASSETCHAINS_SYMBOL[0] == 0 && flags == STANDARD_LOCKTIME_VERIFY_FLAGS && (int64_t)tx.nLockTime >= LOCKTIME_THRESHOLD )//&& nBlockTime >= 1473793441 ) //&& (int64_t)tx.nLockTime < nBlockTime-3600
     {
-        if ( komodo_validate_interest(expiredp,tx,nBlockHeight,prevblocktime) < 0 ) //if ( nBlockTime >= 1490159171 ) // 246748
+        if ( komodo_validate_interest(expiredp,tx,nBlockHeight,prevblocktime < nBlockTime ? nBlockTime : prevblocktime) < 0 ) //if ( nBlockTime >= 1490159171 ) // 246748
         {
             fprintf(stderr,"[%d] IsFinalTx reject.%d locktime %u vs nBlockTime %u\n",(int32_t)(tx.nLockTime-nBlockTime),(int32_t)nBlockHeight,tx.nLockTime,(uint32_t)nBlockTime);
             return(false); // need to prevent pastdating tx
@@ -3335,9 +3335,9 @@ bool CheckBlock(int32_t height,CBlockIndex *pindex,const CBlock& block, CValidat
     // Check transactions
     BOOST_FOREACH(const CTransaction& tx, block.vtx)
     {
-        if ( komodo_validate_interest(0,tx,0,chainActive.Tip()->nTime) < 0 )
+        if ( komodo_validate_interest(0,tx,chainActive.Tip()->nHeight+1,chainActive.Tip()->nTime) < 0 )
         {
-            //fprintf(stderr,"CheckBlock(%d:%d) %d, %u: komodo_validate_interest failure blocksize.%d\n",height,komodo_block2height((CBlock *)&block),pindex!=0?(int32_t)pindex->nHeight:0,pindex!=0?(int32_t)pindex->nTime:0,(int32_t)block.vtx.size());
+            fprintf(stderr,"CheckBlock(%d:%d) %d, %u: komodo_validate_interest failure blocksize.%d tiptime.%u\n",height,komodo_block2height((CBlock *)&block),pindex!=0?(int32_t)pindex->nHeight:0,pindex!=0?(int32_t)pindex->nTime:0,(int32_t)block.vtx.size(),chainActive.Tip()->nTime);
             return error("CheckBlock: komodo_validate_interest failed");
         }
         if (!CheckTransaction(tx, state, verifier))