diff --git a/lib/http/rpc.js b/lib/http/rpc.js
index 3d3a4c6b..76c19c5a 100644
--- a/lib/http/rpc.js
+++ b/lib/http/rpc.js
@@ -2582,8 +2582,10 @@ RPC.prototype.scriptToJSON = function scriptToJSON(script, hex) {
   if (hex)
     json.hex = script.toJSON();
 
-  if (script.isMultisig())
-    json.reqSigs = script.getSmall(0);
+  const [m] = script.getMultisig();
+
+  if (m !== -1)
+    json.reqSigs = m;
 
   const addr = script.getAddress();
 
diff --git a/lib/primitives/tx.js b/lib/primitives/tx.js
index 6409a83f..04795cb1 100644
--- a/lib/primitives/tx.js
+++ b/lib/primitives/tx.js
@@ -1659,9 +1659,9 @@ TX.prototype.hasStandardWitness = function hasStandardWitness(view) {
         continue;
       }
 
-      if (prev.isMultisig()) {
-        const m = prev.getSmall(0);
+      const [m] = prev.getMultisig();
 
+      if (m !== -1) {
         if (witness.items.length - 1 !== m + 1)
           return false;