diff --git a/lib/miner/minerblock.js b/lib/miner/minerblock.js
index 6c399828..baf85ae8 100644
--- a/lib/miner/minerblock.js
+++ b/lib/miner/minerblock.js
@@ -285,7 +285,7 @@ MinerBlock.prototype.build = function build(entries) {
   var len = Math.min(entries.length, constants.block.MAX_SIZE);
   var i, entry, tx, weight, sigops;
 
-  this.weight = this.block.getWeight() + 12;
+  this.weight = this.block.getWeight() + 28;
   this.sigops = this.coinbase.getSigopsWeight(this.flags);
 
   for (i = 0; i < len; i++) {