diff --git a/lib/mining/miner.js b/lib/mining/miner.js
index e13ac431..d1f85a1e 100644
--- a/lib/mining/miner.js
+++ b/lib/mining/miner.js
@@ -321,9 +321,9 @@ Miner.prototype.createBlock = co(function* createBlock(tip, address) {
     version = yield this.chain.computeBlockVersion(tip);
 
   // Cheat on testnet.
-  // if (this.network.difficultyReset) {
+  // if (this.network.pow.difficultyReset) {
   //   median = yield tip.getMedianTimeAsync();
-  //   ts = cheat(tip.ts, median, now);
+  //   ts = cheat(tip.ts, median, now, this.network.pow.targetSpacing);
   //   locktime = ts;
   // }
 
@@ -548,8 +548,8 @@ function cmpRate(a, b) {
   return a.rate - b.rate;
 }
 
-function cheat(prevTime, now, medianTime) {
-  var resetTime = prevTime + (20 * 60);
+function cheat(prevTime, medianTime, now, targetSpacing) {
+  var resetTime = prevTime + (targetSpacing * 2) + 1;
 
   // Already easy.
   if (now <= resetTime)