diff --git a/tests/phpstan.neon b/tests/phpstan.neon
index b0f54870..3106f728 100644
--- a/tests/phpstan.neon
+++ b/tests/phpstan.neon
@@ -1,4 +1,5 @@
 parameters:
+  errorFormat: raw
   level: 3
   paths:
     - ../core