diff --git a/src/calibre/library/server/opds.py b/src/calibre/library/server/opds.py
index b86d0e7a2d..f74a0e6a17 100644
--- a/src/calibre/library/server/opds.py
+++ b/src/calibre/library/server/opds.py
@@ -594,6 +594,9 @@ class OPDSServer(object):
             meta = category_meta.get(category, None)
             if meta is None:
                 continue
+            if category_meta.is_custom_field(category) and \
+                                category not in custom_fields_to_display(self.db):
+                continue
             cats.append((meta['name'], meta['name'], 'N'+category))
         updated = self.db.last_modified()