diff --git a/src/skeletonPlugin.js b/src/skeletonPlugin.js
index ebc04fc..e183286 100644
--- a/src/skeletonPlugin.js
+++ b/src/skeletonPlugin.js
@@ -23,9 +23,10 @@ function SkeletonPlugin(options = {}) {
 }
 
 SkeletonPlugin.prototype.createServer = function () { // eslint-disable-line func-names
-  const server = this.server = new Server(this.options) // eslint-disable-line no-multi-assign
-  server.listen().catch(err => server.log.warn(err))
-}
+  if(!this.server) {
+    const server = this.server = new Server(this.options) // eslint-disable-line no-multi-assign
+    server.listen().catch(err => server.log.warn(err))
+  }
 
 SkeletonPlugin.prototype.insertScriptToClient = function (htmlPluginData) { // eslint-disable-line func-names
   // at develop phase, insert the interface code