diff --git a/lib/bcoin/wallet.js b/lib/bcoin/wallet.js
index 063b0194..c2be1abe 100644
--- a/lib/bcoin/wallet.js
+++ b/lib/bcoin/wallet.js
@@ -319,7 +319,7 @@ Wallet.prototype.sign = function sign(tx, type, inputs, off) {
 
     // P2SH requires a redeem script after signatures
     if (bcoin.script.isScripthash(s)) {
-      if (input.script.length - 1 === this.n) {
+      if (input.script.length - 1 === this.m) {
         input.script.push(this.getP2SHRedemption());
       }
     }