diff --git a/tests/conftest.py b/tests/conftest.py
index 2f62241..b4868be 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -21,6 +21,7 @@ def _make_workspace(workspace_path):
             directory = str(tmpdir)
             resolver = Resolver()
             workspace = resolver.workspace_from_url(workspace_path, dst_dir=directory, download=True)
+            config.OCRD_MISSING_OUTPUT = "ABORT"
             if 'metscache' in request.param:
                 config.OCRD_METS_CACHING = True
                 print("enabled METS caching")