diff --git a/lib/eventemitter.js b/lib/eventemitter.js
index <HASH>..<HASH> 100644
--- a/lib/eventemitter.js
+++ b/lib/eventemitter.js
@@ -135,7 +135,7 @@ EventEmitter.prototype.on = function (ns, callback, context, once) {
 
   tree.callbacks.push({
     'fn': callback,
-    'context': context ? context : this,
+    'context': context || this,
     'once': !! once
   });
replace ternary with || operator