diff --git a/bob/bio/base/test/dummy/database.py b/bob/bio/base/test/dummy/database.py
index c09bf3747e9c41db67537dd845b162dfb5738339..94852fc1e1c39b8f9800f46fec0e1ad9d27b1cce 100644
--- a/bob/bio/base/test/dummy/database.py
+++ b/bob/bio/base/test/dummy/database.py
@@ -1,4 +1,5 @@
 from bob.bio.base.database import ZTBioDatabase
+from bob.bio.base.file import BioFile
 from bob.bio.base.test.utils import atnt_database_directory