diff --git a/tests/Core/ModuleResolver/ResolverStackTest.php b/tests/Core/ModuleResolver/ResolverStackTest.php
index <HASH>..<HASH> 100644
--- a/tests/Core/ModuleResolver/ResolverStackTest.php
+++ b/tests/Core/ModuleResolver/ResolverStackTest.php
@@ -43,7 +43,7 @@ class ResolverStackTest extends PHPUnit_Framework_TestCase
 
         $allResolvers = $property->getValue($stack);
         $theResolver = array_shift($allResolvers);
-        $this->assertInstanceOf('Slender\Interface\ModuleResolverInterface',$theResolver);
+        $this->assertInstanceOf('Slender\Interfaces\ModuleResolverInterface',$theResolver);
     }
need to write tests for the tests i think...