diff --git a/lib/API/Serve.js b/lib/API/Serve.js
index 5027b25f..6cdcfb1e 100644
--- a/lib/API/Serve.js
+++ b/lib/API/Serve.js
@@ -8,7 +8,7 @@ var http = require('http');
 var url = require('url');
 var path = require('path');
 var debug = require('debug')('pm2:serve');
-var probe = require('@pm2/io').probe();
+var probe = require('@pm2/io');
 
 /**
  * list of supported content types.