diff --git a/tests/phpunit-autotest.xml b/tests/phpunit-autotest.xml
index c293d1c7d5952..91b346a5a29b7 100644
--- a/tests/phpunit-autotest.xml
+++ b/tests/phpunit-autotest.xml
@@ -5,6 +5,7 @@
 		 timeoutForSmallTests="900"
 		 timeoutForMediumTests="900"
 		 timeoutForLargeTests="900"
+		 convertDeprecationsToExceptions="true"
 >
 	<testsuite name='ownCloud'>
 		<directory suffix='.php'>lib/</directory>