diff --git a/lib/application.js b/lib/application.js
index fc01474..5ac6102 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -106,6 +106,9 @@ app.context = function(obj){
 
   debug('context: %j', names);
   names.forEach(function(name){
+    if (Object.getOwnPropertyDescriptor(ctx, name)) {
+      debug('context: overwriting %j', name);
+    }
     var descriptor = Object.getOwnPropertyDescriptor(obj, name);
     Object.defineProperty(ctx, name, descriptor);
   });