diff --git a/src/komodo_bitcoind.h b/src/komodo_bitcoind.h
index 095941657..be4c94484 100644
--- a/src/komodo_bitcoind.h
+++ b/src/komodo_bitcoind.h
@@ -1170,10 +1170,10 @@ arith_uint256 komodo_PoWtarget(int32_t *percPoSp,arith_uint256 target,int32_t he
     } else return(target);
     if ( percPoS < goalperc ) // increase PoW diff -> lower bnTarget
     {
-        if ( height > 1120 )
+        if ( height > 1200 )
         {
-            factor = arith_uint256(goalperc) / arith_uint256(percPoS + goalperc);
-            bnTarget = (ave * factor * factor);
+            factor = arith_uint256(goalperc * goalperc) / arith_uint256((percPoS + goalperc) * (percPoS + goalperc));
+            bnTarget = (ave * factor);
         }
         else bnTarget = (ave * arith_uint256(goalperc)) / arith_uint256(percPoS + goalperc);
         if ( 1 )