diff --git a/bob/bio/base/test/test_scripts.py b/bob/bio/base/test/test_scripts.py
index effa0a043b1d0a5c6be20b11e00a41e234e7666e..0141aeb34b47ec36c18814298968529d5d370547 100644
--- a/bob/bio/base/test/test_scripts.py
+++ b/bob/bio/base/test/test_scripts.py
@@ -512,6 +512,7 @@ def test_scripts():
     parameters = [
         '-m', model_file, model_file,
         '-p', extracted_file, extracted_file,
+        '-e', 'dummy',
         '-a', 'dummy',
         '-P', projector_file,
         '-E', enroller_file,