diff --git a/tests/lib/test_event_filter.py b/tests/lib/test_event_filter.py
index 1f6eb253..c944689c 100644
--- a/tests/lib/test_event_filter.py
+++ b/tests/lib/test_event_filter.py
@@ -16,6 +16,7 @@ def test_tag_match():
 
     assert EventTagFilter(["partition+arm"]).match(event) is True
     assert EventTagFilter(["partition+arm+restore"]).match(event) is True
+    assert EventTagFilter(["partition,arm,-restore"]).match(event) is False
     assert EventTagFilter(["partition"]).match(event) is True
     assert EventTagFilter(["arm"]).match(event) is True
     assert EventTagFilter(["arm-zone"]).match(event) is True