diff --git a/flask_restx/swagger.py b/flask_restx/swagger.py
index c780661d..c02feb44 100644
--- a/flask_restx/swagger.py
+++ b/flask_restx/swagger.py
@@ -598,7 +598,7 @@ def register_field(self, field):
                 self.register_model(model)
         elif isinstance(field, fields.Nested):
             self.register_model(field.nested)
-        elif isinstance(field, fields.List):
+        elif isinstance(field, (fields.List, fields.Wildcard)):
             self.register_field(field.container)
 
     def security_for(self, doc, method):