diff --git a/tests/Unit/Filters/Frame/CustomFrameFilterTest.php b/tests/Unit/Filters/Frame/CustomFrameFilterTest.php
index 5308b87..69a6665 100644
--- a/tests/Unit/Filters/Frame/CustomFrameFilterTest.php
+++ b/tests/Unit/Filters/Frame/CustomFrameFilterTest.php
@@ -12,6 +12,6 @@ class CustomFrameFilterTest extends TestCase
 	$frame = $this->getFrameMock();
 
 	$filter = new CustomFrameFilter('whatever i put would end up as a filter');
-        $this->assertEquals(array('-vf', 'whatever i put would end up as a filter'), $filter->apply($frame));
+	$this->assertEquals(array('-vf', 'whatever i put would end up as a filter'), $filter->apply($frame));
     }
 }