diff --git a/web/pgadmin/browser/server_groups/servers/databases/casts/__init__.py b/web/pgadmin/browser/server_groups/servers/databases/casts/__init__.py
index 6be5d63..cccafb6 100644
--- a/web/pgadmin/browser/server_groups/servers/databases/casts/__init__.py
+++ b/web/pgadmin/browser/server_groups/servers/databases/casts/__init__.py
@@ -535,7 +535,7 @@ class CastView(PGChildNodeView):
             if cid is not None:
                 last_system_oid = 0 if self.blueprint.show_system_objects else \
                     (self.manager.db_info[did])['datlastsysoid'] \
-                    if self.manager.db_info is not none and \
+                    if self.manager.db_info is not None and \
                     did in self.manager.db_info else 0
                 sql = render_template("/".join([self.template_path, 'properties.sql']),
                                       cid=cid,