diff --git a/avocado/plugins/yaml_to_mux.py b/avocado/plugins/yaml_to_mux.py
index 1bb6890267feb9d99a3149dfdaf0c5cd7ab8d369..dd74e9cb5b1c6e0e223e87cf1455dec65434c58b 100644
--- a/avocado/plugins/yaml_to_mux.py
+++ b/avocado/plugins/yaml_to_mux.py
@@ -270,7 +270,7 @@ class YamlToMux(CLI):
         if multiplex_files:
             msg = ("The use of `--multiplex` is deprecated, use `--mux-yaml` "
                    "instead.")
-            logging.getLogger("avocado.test").warning(msg)
+            logging.getLogger("avocado.app").warning(msg)
             debug = getattr(args, "mux_debug", False)
             try:
                 args.mux.data_merge(create_from_yaml(multiplex_files, debug))