diff --git a/packages/bitcore-lib-cash/lib/crypto/schnorr.js b/packages/bitcore-lib-cash/lib/crypto/schnorr.js
index ec4129f0ef9..3e81303f7fe 100644
--- a/packages/bitcore-lib-cash/lib/crypto/schnorr.js
+++ b/packages/bitcore-lib-cash/lib/crypto/schnorr.js
@@ -198,7 +198,7 @@ Schnorr.prototype._findSignature = function(d, e) {
     return Schnorr().set({
       hashbuf: hashbuf,
       endian: endian,
-      sig: {...sig, isSchnorr: true },
+      sig: sig,
       pubkey: pubkey
     }).verify().verified;
   };