diff --git a/bob/bio/base/utils/resources.py b/bob/bio/base/utils/resources.py
index e2c5816d326830619c5978b33ccb47f7528bf3ec..3c3b5749047ed700c8279ea4fefc9a6481959ca4 100644
--- a/bob/bio/base/utils/resources.py
+++ b/bob/bio/base/utils/resources.py
@@ -20,7 +20,7 @@ logger = logging.getLogger("bob.bio.base")
 
 
 #: Keywords for which resources are defined.
-valid_keywords = ('database', 'preprocessor', 'extractor', 'algorithm', 'grid', 'config')
+valid_keywords = ('database', 'preprocessor', 'extractor', 'algorithm', 'grid', 'config', 'annotator')
 
 
 def _collect_config(paths):