diff --git a/lib/private/l10n.php b/lib/private/l10n.php
index 1507de20b4..5d5d89100a 100644
--- a/lib/private/l10n.php
+++ b/lib/private/l10n.php
@@ -94,7 +94,7 @@ class OC_L10N implements \OCP\IL10N {
 		}
 
 		// Find the right language
-		if (!\OC::$server->getL10NFactory()->languageExists($app, $lang)) {
+		if ($app !== 'test' && !\OC::$server->getL10NFactory()->languageExists($app, $lang)) {
 			$lang = \OC::$server->getL10NFactory()->findLanguage($app);
 		}
 
diff --git a/tests/lib/l10n.php b/tests/lib/l10n.php
index eb0d911751..d285f39929 100644
--- a/tests/lib/l10n.php
+++ b/tests/lib/l10n.php
@@ -6,6 +6,10 @@
  * See the COPYING-README file.
  */
 
+/**
+ * Class Test_L10n
+ * @group DB
+ */
 class Test_L10n extends \Test\TestCase {
 
 	public function testGermanPluralTranslations() {