diff --git a/lib/script/script.js b/lib/script/script.js
index a6964272..f8421663 100644
--- a/lib/script/script.js
+++ b/lib/script/script.js
@@ -3417,7 +3417,7 @@ Script.verifyMast = function verifyMast(program, stack, output, flags, tx, i) {
     }
   }
 
-  output = new bcoin.script(scripts.render());
+  output = new Script(scripts.render());
   output.execute(stack, flags, tx, i, 1);
 
   if (stack.length !== 0)