diff --git a/lib/primitives/mtx.js b/lib/primitives/mtx.js
index 0dae4a26..495e7dbc 100644
--- a/lib/primitives/mtx.js
+++ b/lib/primitives/mtx.js
@@ -559,7 +559,7 @@ class MTX extends TX {
    * based on a previous script.
    * @param {Script} prev
    * @param {Buffer} ring
-   * @return {Boolean}
+   * @return {Stack}
    */
 
   scriptVector(prev, ring) {