diff --git a/lib/echonet-lite.js b/lib/echonet-lite.js
index 8a250bb..d557b1a 100644
--- a/lib/echonet-lite.js
+++ b/lib/echonet-lite.js
@@ -6,7 +6,7 @@ const EchonetLite = require('echonet-lite-more')
 class PromisifiedEchonetLite {
   constructor(arg) {
     this.el = new EchonetLite(arg)
-    this.setQueue = new Bobolink({concurrency: 10})
+    this.setQueue = new Bobolink({concurrency: 1})
     this.getQueue = new Bobolink({concurrency: 50})
   }
 }