diff --git a/lib/browser/rpc-server.js b/lib/browser/rpc-server.js
index b49f152271f..23a1ee87cbb 100644
--- a/lib/browser/rpc-server.js
+++ b/lib/browser/rpc-server.js
@@ -95,8 +95,10 @@ let valueToMeta = function (sender, value, optimizeSimpleObject = false) {
     meta.members.forEach((member) => {
       if (member.type === 'method') {
         const method = value[member.name]
-        member.id = objectsRegistry.add(sender, method)
         member.members = getObjectMembers(method)
+        if (member.members.length > 0) {
+          member.id = objectsRegistry.add(sender, method)
+        }
       }
     })
   } else if (meta.type === 'buffer') {