diff --git a/examples/conditional-middleware-middleware.js b/examples/conditional-middleware-middleware.js
index 3bea302..92eaaeb 100644
--- a/examples/conditional-middleware-middleware.js
+++ b/examples/conditional-middleware-middleware.js
@@ -21,7 +21,7 @@ function ignoreAssets(mw) {
     if (/(\.js|\.css|\.ico)$/.test(this.path)) {
       yield next;
     } else {
-      yield mw(next);
+      yield mw.call(this, next);
     }
   }
 }
diff --git a/examples/conditional-middleware.js b/examples/conditional-middleware.js
index e793aea..aa085b6 100644
--- a/examples/conditional-middleware.js
+++ b/examples/conditional-middleware.js
@@ -20,7 +20,7 @@ app.use(function *(next){
     yield next;
   } else {
     this.body = 'Hello World';
-    yield logger(next);
+    yield logger.call(this, next);
   }
 });