diff --git a/lib/mining/miner.js b/lib/mining/miner.js
index a0d04e71..c107d2a8 100644
--- a/lib/mining/miner.js
+++ b/lib/mining/miner.js
@@ -431,6 +431,9 @@ Miner.prototype.build = function build(attempt) {
     if (!tx.isFinal(attempt.height, attempt.locktime))
       continue;
 
+    if (!attempt.witness && tx.hasWitness())
+      continue;
+
     for (j = 0; j < tx.inputs.length; j++) {
       input = tx.inputs[j];
       prev = input.prevout.hash;