diff --git a/src/frequenz/quantities/conftest.py b/src/frequenz/quantities/conftest.py
index c84af78..565c99b 100644
--- a/src/frequenz/quantities/conftest.py
+++ b/src/frequenz/quantities/conftest.py
@@ -10,4 +10,11 @@
 from frequenz.repo.config.pytest import examples
 from sybil import Sybil
 
-pytest_collect_file = Sybil(**examples.get_sybil_arguments()).pytest()
+args = examples.get_sybil_arguments()
+# Exclude "excludes" from the arguments
+# as it was used to work around a bug that
+# is no longer an issue.
+args.pop("excludes")
+
+
+pytest_collect_file = Sybil(**args).pytest()