diff --git a/src/tmp/wokkel/pubsub.py b/src/tmp/wokkel/pubsub.py
index 41283ee2..a2cf3f37 100755
--- a/src/tmp/wokkel/pubsub.py
+++ b/src/tmp/wokkel/pubsub.py
@@ -332,7 +332,7 @@ class PubSubRequest(generic.Stanza):
         'unsubscribe': ['nodeOrEmpty', 'jid', 'subidOrNone'],
         'optionsGet': ['nodeOrEmpty', 'jid', 'subidOrNone'],
         'optionsSet': ['nodeOrEmpty', 'jid', 'options', 'subidOrNone'],
-        'subscriptions': [],
+        'subscriptions': ['nodeOrEmpty'],
         'affiliations': ['nodeOrNone'],
         'create': ['nodeOrNone', 'configureOrNone'],
         'default': ['default'],