diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index 664588e7..f5c3399d 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -862,6 +862,7 @@ script.isMultisig = function isMultisig(s, pubs) {
   if (s.length < 4)
     return false;
 
+  // compat
   if (pubs && !Array.isArray(pubs[0]))
     pubs = [pubs];