diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index 070c4e3e..90ab5621 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -1733,9 +1733,6 @@ Script.prototype.getInputType = function getInputType() {
 Script.getInputType = function getInputType(code, isWitness) {
   var type;
 
-  if (prev)
-    return prev.getType();
-
   type = (Script.isPubkeyInput(code) && 'pubkey')
     || (Script.isPubkeyhashInput(code) && 'pubkeyhash')
     || (Script.isMultisigInput(code, isWitness) && 'multisig')