diff --git a/lib/mining/miner.js b/lib/mining/miner.js
index 99c6d460..5d60cd34 100644
--- a/lib/mining/miner.js
+++ b/lib/mining/miner.js
@@ -36,7 +36,7 @@ function Miner(options) {
   this.options = new MinerOptions(options);
   this.network = this.options.network;
   this.logger = this.options.logger.context('miner');
-  this.workers = null;
+  this.workers = this.options.workers;
   this.chain = this.options.chain;
   this.mempool = this.options.mempool;
   this.addresses = this.options.addresses;