diff --git a/tests/phpunit.dist.xml b/tests/phpunit.dist.xml
index 27c31d9d..97084427 100644
--- a/tests/phpunit.dist.xml
+++ b/tests/phpunit.dist.xml
@@ -8,6 +8,7 @@
     beStrictAboutTestsThatDoNotTestAnything="true"
     beStrictAboutOutputDuringTests="true"
     forceCoversAnnotation="true"
+    executionOrder="defects"
 >
 
 <php>