diff --git a/beangulp/importers/csvbase_test.py b/beangulp/importers/csvbase_test.py
index 0b6bfbd..1ce9832 100644
--- a/beangulp/importers/csvbase_test.py
+++ b/beangulp/importers/csvbase_test.py
@@ -499,3 +499,4 @@ def finalize(self, txn, row):
 
         importer = CSVImporter('Assets:CSV', 'EUR')
         entries = importer.extract(filename, [])
+        self.assertTrue(not entries)