diff --git a/tests/lib/files/cache/scanner.php b/tests/lib/files/cache/scanner.php
index 1f11b9d01d..e3f47047f5 100644
--- a/tests/lib/files/cache/scanner.php
+++ b/tests/lib/files/cache/scanner.php
@@ -94,10 +94,9 @@ class Scanner extends \UnitTestCase {
 
 		$this->scanner->scan('folder', \OC\Files\Cache\Scanner::SCAN_SHALLOW);
 
-		$cachedDataFolder = $this->cache->get('');
 		$cachedDataFolder2 = $this->cache->get('folder');
 
-		$this->assertNotEqual($cachedDataFolder['size'], -1);
+		$this->assertNotEqual($cachedDataFolder2['size'], -1);
 	}
 
 	function setUp() {