diff --git a/ccdproc/tests/test_image_collection.py b/ccdproc/tests/test_image_collection.py
index 72d6f063..eb5a55e0 100644
--- a/ccdproc/tests/test_image_collection.py
+++ b/ccdproc/tests/test_image_collection.py
@@ -1015,6 +1015,7 @@ def test_type_of_empty_collection(self, triage_setup):
             ic = ImageFileCollection(triage_setup.test_dir)
         assert ic.summary is None
         assert ic.keywords == []
+        assert ic.files_filtered() == []
 
     def test_regex_match_for_search(self, triage_setup):
         # Test regex matching in searches