diff --git a/phpunit.default.xml b/phpunit.default.xml
index 2664543d0a..31ac89bcfe 100644
--- a/phpunit.default.xml
+++ b/phpunit.default.xml
@@ -7,7 +7,7 @@
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          processIsolation="false"
-         stopOnFailure="false">
+         stopOnFailure="true">
     <testsuites>
         <testsuite name="Application Test Suite">
             <directory>./tests/</directory>