diff --git a/sat/plugins/plugin_pubsub_cache.py b/sat/plugins/plugin_pubsub_cache.py
index 3c213cb5..c7c55009 100644
--- a/sat/plugins/plugin_pubsub_cache.py
+++ b/sat/plugins/plugin_pubsub_cache.py
@@ -508,7 +508,7 @@ class PubsubCache:
         if max_items is None and rsm_request is None:
             max_items = 20
             pubsub_items, metadata = await self.host.memory.storage.getItems(
-                node, max_items=max_items, item_ids=item_ids,
+                node, max_items=max_items, item_ids=item_ids or None,
                 order_by=extra.get(C.KEY_ORDER_BY)
             )
         elif max_items is not None: