diff --git a/tests/lib/testcase.php b/tests/lib/testcase.php
index c2a72beffc..1ee0c85b98 100644
--- a/tests/lib/testcase.php
+++ b/tests/lib/testcase.php
@@ -156,11 +156,13 @@ abstract class TestCase extends \PHPUnit_Framework_TestCase {
 
 	public static function tearDownAfterClass() {
 		$dataDir = \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data-autotest');
-		$queryBuilder = \OC::$server->getDatabaseConnection()->getQueryBuilder();
+		if (\OC::$server->getDatabaseConnection()) {
+			$queryBuilder = \OC::$server->getDatabaseConnection()->getQueryBuilder();
 
-		self::tearDownAfterClassCleanShares($queryBuilder);
-		self::tearDownAfterClassCleanStorages($queryBuilder);
-		self::tearDownAfterClassCleanFileCache($queryBuilder);
+			self::tearDownAfterClassCleanShares($queryBuilder);
+			self::tearDownAfterClassCleanStorages($queryBuilder);
+			self::tearDownAfterClassCleanFileCache($queryBuilder);
+		}
 		self::tearDownAfterClassCleanStrayDataFiles($dataDir);
 		self::tearDownAfterClassCleanStrayHooks();
 		self::tearDownAfterClassCleanStrayLocks();