diff --git a/src/komodo_bitcoind.h b/src/komodo_bitcoind.h
index 510ea12bf..54a06b102 100644
--- a/src/komodo_bitcoind.h
+++ b/src/komodo_bitcoind.h
@@ -1070,15 +1070,19 @@ uint64_t komodo_commission(const CBlock *pblock)
 
 uint32_t komodo_stake(int32_t validateflag,arith_uint256 bnTarget,int32_t nHeight,uint256 txid,int32_t vout,uint32_t blocktime,uint32_t prevtime,char *destaddr)
 {
-    CBlockIndex *pindex; uint8_t hashbuf[128]; char address[64]; bits256 addrhash; arith_uint256 hashval; uint256 hash,pasthash; int64_t diff=0; int32_t segid,minage,i,iter=0; uint32_t txtime,winner = 0; uint64_t value,coinage,supply = ASSETCHAINS_SUPPLY + nHeight*ASSETCHAINS_REWARD/SATOSHIDEN;
+    bool fNegative,fOverflow; CBlockIndex *pindex; uint8_t hashbuf[128]; char address[64]; bits256 addrhash; arith_uint256 hashval; uint256 hash,pasthash; int64_t diff=0; int32_t segid,minage,i,iter=0; uint32_t txtime,winner = 0; arith_uint256 bnMaxPoSdiff; uint64_t value,coinage,supply = ASSETCHAINS_SUPPLY + nHeight*ASSETCHAINS_REWARD/SATOSHIDEN;
     txtime = komodo_txtime(&value,txid,vout,address);
     if ( value == 0 || txtime == 0 || blocktime == 0 || prevtime == 0 )
         return(0);
+    bnMaxPoSdiff.SetCompact(KOMODO_MINDIFF_NBITS,&fNegative,&fOverflow);
+    bnMaxPoSdiff = (bnMaxPoSdiff / arith_uint256(4));
+    if ( bnTarget < bnMaxPoSdiff )
+        bnTarget = bnMaxPoSdiff;
     if ( (minage= nHeight*3) > 6000 )
         minage = 6000;
     if ( blocktime < prevtime+57 )
         blocktime = prevtime+57;
-    if ( blocktime > txtime+minage && (pindex= komodo_chainactive(nHeight>200?nHeight-200:1)) != 0 )
+    if ( blocktime > txtime+minage && (pindex= komodo_chainactive(nHeight>50?nHeight-50:1)) != 0 )
     {
         vcalc_sha256(0,(uint8_t *)&addrhash,(uint8_t *)address,(int32_t)strlen(address));
         segid = ((nHeight + addrhash.uints[0]) & 0x3f);
diff --git a/src/miner.cpp b/src/miner.cpp
index 8a56b72d1..83c6b4565 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -816,7 +816,7 @@ void static BitcoinMiner()
             if ( ASSETCHAINS_SYMBOL[0] == 0 && notaryid >= 0 )
             {
                 j = 65;
-                if ( (Mining_height >= 235300 && Mining_height < 236000) || (Mining_height % KOMODO_ELECTION_GAP) > 64 || (Mining_height % KOMODO_ELECTION_GAP) == 0 )
+                if ( (Mining_height >= 235300 && Mining_height < 236000) || (Mining_height % KOMODO_ELECTION_GAP) > 64 || (Mining_height % KOMODO_ELECTION_GAP) == 0 || Mining_height > 1000000 )
                 {
                     komodo_eligiblenotary(pubkeys,mids,blocktimes,&nonzpkeys,pindexPrev->nHeight);
                     if ( nonzpkeys > 0 )
diff --git a/src/pow.cpp b/src/pow.cpp
index 2b20f545b..cdf73d3be 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -167,7 +167,7 @@ bool CheckProofOfWork(int32_t height,uint8_t *pubkey33,uint256 hash,unsigned int
             else if ( height >= 80000 && height < 108000 && special2 > 0 )
                 flag = 1;
             else if ( height >= 108000 && special2 > 0 )
-                flag = ((height % KOMODO_ELECTION_GAP) > 64 || (height % KOMODO_ELECTION_GAP) == 0);
+                flag = (height > 1000000 || (height % KOMODO_ELECTION_GAP) > 64 || (height % KOMODO_ELECTION_GAP) == 0);
             else if ( height == 790833 )
                 flag = 1;
             else if ( special2 < 0 )