diff --git a/lib/model/copayer.js b/lib/model/copayer.js
index 0590e6a..f6885d0 100644
--- a/lib/model/copayer.js
+++ b/lib/model/copayer.js
@@ -23,7 +23,7 @@ function Copayer(opts) {
   this.name = opts.name;
   this.xPubKey = opts.xPubKey;
   this.xPubKeySignature = opts.xPubKeySignature; // So third parties can check independently
-  this.signingPubKey = opts.signingPubKey || this.getSigningPubKey();
+  this.signingPubKey = this.getSigningPubKey();
 };
 
 util.inherits(Copayer, Addressable);