diff --git a/test/js/samples/debug-no-dependencies/expected.js b/test/js/samples/debug-no-dependencies/expected.js
index 9985c814a2..a097869e74 100644
--- a/test/js/samples/debug-no-dependencies/expected.js
+++ b/test/js/samples/debug-no-dependencies/expected.js
@@ -134,10 +134,20 @@ function create_fragment(ctx) {
 	return block;
 }
 
+function instance($$self, $$props) {
+	const writable_props = [];
+
+	Object.keys($$props).forEach(key => {
+		if (!~writable_props.indexOf(key) && key.slice(0, 2) !== "$$") console.warn(`<Component> was created with unknown prop '${key}'`);
+	});
+
+	return [];
+}
+
 class Component extends SvelteComponentDev {
 	constructor(options) {
 		super(options);
-		init(this, options, null, create_fragment, safe_not_equal, {});
+		init(this, options, instance, create_fragment, safe_not_equal, {});
 
 		dispatch_dev("SvelteRegisterComponent", {
 			component: this,