diff --git a/lib/io.js b/lib/io.js
index 1f741bf..c16dd1e 100644
--- a/lib/io.js
+++ b/lib/io.js
@@ -133,7 +133,7 @@ module.exports = class IO {
   }
 
   async _bindSockets () {
-    this.serverSocket = typeof this._bind === 'function' ? this._bind() : await bind.udp(this._bind)
+    this.serverSocket = typeof this._bind === 'function' ? await this._bind() : await bind.udp(this._bind)
 
     try {
       // TODO: we should reroll the socket is it's close to our preferred range of ports