diff --git a/tests/core.testing.ini b/tests/core.testing.ini
index 35d603c..87bc44e 100644
--- a/tests/core.testing.ini
+++ b/tests/core.testing.ini
@@ -1,5 +1,11 @@
 [core]
 server-port = 5000
-discovery-port = 4422
 database = core.sqlite
+not-found-file = 404.html
+not-found-file-mime = text/html
+not-found-content = 404 - NOT FOUND
+not-found-content-type = text/plain
+
+: 4421 for dev-env; 4420 for testing-env; 4419 for prod-env; 4422 for testing
+discovery-port = 4422
 log-level = debug