diff --git a/lib/xcore.js b/lib/xcore.js
index 912357e..2a8aa15 100644
--- a/lib/xcore.js
+++ b/lib/xcore.js
@@ -20,7 +20,7 @@ var coreRequests = require('./corereqs');
 var stdatoms = require('./stdatoms');
 var em = require('./eventmask').eventMask;
 
-function XClient(stream, displayNum, screenNum, options)
+function XClient(displayNum, screenNum, options)
 {
     EventEmitter.call(this);
     this.options = options ? options : {};