diff --git a/lib/primitives/mtx.js b/lib/primitives/mtx.js
index 6040f522..1ab9d970 100644
--- a/lib/primitives/mtx.js
+++ b/lib/primitives/mtx.js
@@ -486,7 +486,7 @@ MTX.prototype.signVector = function signVector(prev, vector, sig, ring) {
   // P2PK
   if (prev.isPubkey()) {
     // Make sure the pubkey is ours.
-    if (!utils.equal(ring.keyHash, prev.get(0)))
+    if (!utils.equal(ring.publicKey, prev.get(0)))
       return false;
 
     // Already signed.